in both cases.. you were obviously told by someone to do things on a BUY HIGH strategy...(facepalm)

when you learn the market cycle of when ATH season is and when the correction is. you will learn when its best to buy low and sell high
hint
we are entering the ATH season now. the time the price is going to reach its peak in next few months
then in ~2 years we will be in the correction new bottom of the cycle

..
anyone telling you to DCA or lumpsum buy on the rise/high are people wanting you(and other naive traders) to help pump the price for THEM to sell. they are not your friend

using your image.. buy the red sell the green

For sure the person who just did that DCA or the lump sum had not studied the market well on where to have his entry point.  But regardless, if the person has patience enough, he will make profit eventually since Bitcoin is known for its cycles where every cycle it records its all-time high.

I can't.

These charts are typical of a novice retail investor, who is typically motivated to invest when the price goes up and when the price goes down does not invest or even worse, sells. Those of us who have been doing this for years know that it is the opposite, doing DCA implies forgetting about the ups and downs, buying regularly. And if you want to contribute a separate lump sum (if you are already doing DCA), better in a market downturn. On the other hand, if you are starting to think about investing now and you have a lump sum it is best to buy right now regardless of the price (as long as you believe in the great future of bitcoin in the long term), because you can not time the market, and it is better time in the market.

That's why DCA is better than lump sum. If the price falls after you make your purchase, then your next purchase might be cheaper. If the price rises after your purchase, then your earlier purchase is already in profit, although you will be buying at a more expensive price after that.

However, it doesn't mean that lump sum is a strategy everybody should avoid at all cost. The point, after all, in Bitcoin investment is to hodl. It's designed as a long-term investment. So, it matters a little that you bought at $100,000 and not $95,000 when the price has already hit $300,000 or $600,000 or $1 million.

I can only relate that this is not a strategy and even if is being use by someone as a strategy is a faulty one that has the potential of disrupting your investment, just take a good look on the image were he point those dot to DCA and lump sum, however what he is explaining on the Lump sum dot is that if people buys Bitcoin when the price is a bit up they will face a big loss and that's wrong, so if perhaps he condemned buying lump sum that way he should also explain using the dot to indicate were he feels necessary to lump sum, however DCA is not from a particular position it could be anywhere and any price Instead pointing from down to up, so actually I don't see any amazing thing about it really.

It is all coincidence and does not have anything to do with the kind of strategy you use. Either you do dca or you buy all at once, the market can either go low or go high. It is just what it is. Some people might end up making assumptions based on this and conclude that if you do dca, you will experience market dip less. It's not true.

Personally I have not experienced this. Even if I do dca method, sometimes the market rises and sometimes it doesn't but I typically do not care because I hold for the long term anyway.

When people did enough research about the market: its historic market cycle, psychology of market cycle, and best investment strategies; then if they pick DCA strategy for their investment journeys, it's good. Because they already understand about the market at acceptable level, and prepare their mentality about market dumps, bear market time, as well as what can happen during bearish months like a lot of FUD.

It's helpful for them to have strong mentality, and diamond hands to DCA bitcoin and hold their bitcoins, in meantime of upcoming bull market and new ATH.

If they don't do stupid things like buying bitcoin, then trading it.
If they don't do super stupid things like trading bitcoin in margin or futures trading.

If they don't do these things, they can hold their bitcoin and after 3, 4 or more years, they will have good profit. One market cycle is about 4 years, and hodl camp map shows that if Bitcoin holders can hold their bitcoin for a little bit more than 5 years, profit comes.

https://hodl.camp/

I think the principles of DCA is specific to individual's understanding of it and how comfortable and confident they feel about it. You can follow the general principle of buy low and sell high, you can also follow the lump sum method. And finally follow the buy small portions consistently forgetting which of the market conditions you are in. It is about you and your goals. In my estimation, no one is better than the other and it is not a one-size-fits all approach. It is the out outcome of doing your own research that you should follow and if it doesn't work for you as much as you thought it would, you can change it to the one that works better for you.

In my opinion, investing in Bitcoin (like any other human activity) requires motivation. You need to come up with your own motivation.

Since we are talking about investments, it is useful to imagine at what price you will sell Bitcoin in the future. For example, you believe that sooner or later the price of Bitcoin will reach 1 million US dollars.

At this price, you will be ready to sell your coins. Now you have the motivation to buy Bitcoin every month for a certain amount.

You do not care what the purchase price is. The only thing you care about now is how many coins you will manage to accumulate before the price reaches the level you need.

Hmm, Quite easy isn't it?

But why did he post this image and ask for reliability? Seems like OP is looking for someone to share the feelings haha just kidding by the way according to your words and the first view on the image anyone can get to know what to do and what not to.

Those who want to enter for the long term in this market, I think they should reconsider their entry timeline, but for short-term investors traders whatever we call them market is open join and enjoy the rally we are not going anywhere below 89.7k to 87.9k anytime soon in upcoming 3 months. (Not Financial advice just a speculation based on sentiments and developments for any investment plan DYOR is required as for your action only you are accountable).