This method is more general meaning anyone can use it. It's not limited to those with more than sufficient finances or even those with only one source of income. Therefore this method is never intended for those with large incomes so there's no difference in its use.

It is true as you said that what makes the difference is those who choose to accumulate in large amounts so that the difference is only focused on the nominal amount of the accumulated amount by two people, one of whom is a person who has a source of income, of course it is natural for them to accumulate Bitcoin in any amount and this is more towards the decision made by people who dare to mentally in doing the amount of accumulation because there are also incidents where many have income but they also do not have the guts to accumulate Bitcoin so that in the end they prefer to do it with the amount that is often done by those who are classified as less able or poor.

You are right because the DCAing method is very entertaining to every set of person's. This method set no limitations or boundaries, no discrimination between investors, it's a strategy set aside to give even the poor the opportunity to invest without thinking of going bankrupt in anyway. Hence this method is available or being put in place any excuse for not investing in Bitcoin investment is not accommodated because it got us covered and enable us to arrive at our dreamed level in our investment journey.

Emergency fund is not only for those using DCA strategy, it is essential for all bitcoin investors to have their emergency fund to protect their portfolio from being tampered in the face of emergencies. It is not necessary to follow various strategies in order to maintain your portfolio as long as you're not planning to sell or take profit within a short while, DCA is enough for a person who intends to accumulate periodically for a long-term, although certain unplanned availability of funds from work bonus, gifts, e.t.c can make more discretionary income available and the investor can decide to lump sum with all of it into bitcoin at once while he keeps maintaining his periodic buys.

Buying bitcoin aggressively is not bad if the investor is able to do it from the place of comfort, the problem is over aggressiveness which means investing beyond your available discretionary income, if the investor can put more percentage of his discretionary income into bitcoin comfortably, then he is being aggressive. It is important to note that investors can still get more aggressive when they are done building their emergency fund, they can channel back the funds meant for it into bitcoin buying to increase their aggressiveness.

For example:
If a person who has $100 discretionary income uses $50 to buy bitcoin, $30 for backup fund and $20 for discretionary consumption, he puts 50% into buying bitcoin. If such a person finishes building his emergency fund to be 3 months worth of his expenses and stops building it, he can channel the $30 into buying bitcoin and now uses $80 to buy bitcoin, his aggressiveness has increased since he now uses 80% of his discretionary income to buy bitcoin.

The dip is actually an opportunity cost (losing a chance by chosing another chance) and so it's not what a newbie should be waiting for when the waiting can possibly amount to no Bitcoin which makes the dip buying plan or practice inferior for a newbie particularly. Dollar cost averaging is actually great for a newbie since it helps in accumulating more Bitcoin at lower price than high price, it removes emotions that can affect buying and likewise reduce the impact associated with market crash.

Morst newbies, DCA which is the Dollar cost Average, strategy is the best and the safest way and most practice way to start investing in Bitcoin. Instead of using another way to predict market highs and lows , a bigginer invests a fixed amount of money at weekly or monthly intervals, which will help the investor to reduce some impact of Bitcoins short time price volatility and remove a lot of bad feelings decisions making that often which will brings mistakes in the Bitcoin investment journey.
DCA largely depends on the investor actitude, consistency, and investing horizon. Note their is no guaranteed of profit, Bitcoin has historically rewards long-term holders that accumulated different markets cycles and remained patient.
DCA also helps beginners build a good habit of saving their investing without hard feelings pressured to time the market.
Beginners should invest only from discretionary income and make sure to maintain an emergency funds for unpleasant situations.

For a new investor accumulation Bitcoin in DCA is a long term investment because as his investment experience increases in any price trend, so does the amount of Bitcoin holding. If you wait for the price to decrease to invest it will be a waste of time and you will miss the best investment opportunity. Traders always focus more on price fluctuations to buy or sell but smart and long term investors accumulate Bitcoin regularly through discretionary income. DCA is not only used by small and new investors to store Bitcoin. Large corporate Bitcoin holding institutions regularly buying Bitcoin in this method such as Michael Saylor's "Strategy".

There is no doubt that the DCA strategy is quite good. But you have presented DCA in such a way that it solves everyone's problems and does not provide an "excuse for not investing". Your blanket statement is weak. Because if someone does not have discretionary income and cannot manage their own necessary expenses properly, then it is probably not right to force them to start DCA. No matter how good the DCA method is, it does not eliminate the risk of bankruptcy of a person by itself. Rather, using the DCA strategy, risk control comes through proper cashflow management, setting aside necessary expenses, emergency fund and staying within your means.

The DCA is the easiest to use of the BITCOIN investment strategies which is one of the major reasons why newbies who want to accumulating bitcoin are better off using it instead of trying to complicate their start with other strategies that are not all that newbie friendly, even common sense will confirm to a person that if they want to start accumulating bitcoin then the best strategy for them to use since their accumulation plan of long term is the DCA, with time and depending on the availability of their discretionary income they can employ the use of other strategies but the DCA being their primary choice is the 'common sense' thing to do.

We are not talking about trading here so don't come and start hyping trading and mislead newbies for them to think that trading is good when we are talking about how to accumulate bitcoin with DCA overtime in other to pile up wealth for yourself in future.

Grid trading or whatever, you call it is still a wide road to big losses because trading is the same thing with gambling since all traders will be at loss in the long run. I will advise newbies to start their crypto journey with long term bitcoin investment using DCA to accumulate bitcoin weekly provided that your discretionary is available.

Newbies shouldn't engage in activities that they will later regret their actions in future which is why you should have a bitcoin target and keep your bitcoin accumulation ongoing and stay focused on reaching your bitcoin target.

You don't DCA to sell when the price is high, you DCA to continue building your bitcoin portfolio overtime without selling till your reach your over accumulation stage.

The DCA method is always good and for a start it is always good and best especially for those who doesn't have a huge discretionary income but that doesn't mean it is only the method that can be used to accumulate Bitcoin or it is the only method that can make an investor to be successful or hold for the long term because the Dip can also help an investor front load or double our portfolio so while we are accumulating with the DCA we should also prepare for the Dip.