This strategy doesn't apply for all traders, what if a certain trader doesn't have enough capital? Do you think he can buy every dips or what they called averaging down? Of course not. Even if it is a strategy it doesn't mean that you can guarantee yourself to earn from it just because you buy at dip and hold. We should consider the time after all, are we going to hold it for the rest of our lives or are we going to sell it in short period of time.
Of course, bitcoin can be (or probably should be) considered as a long term investment of 4-10 years or more.
Accordingly, you can buy as little as $10 per week and the vast majority of people can afford such a minimum or they can also be more aggressive with their strategy to both include a higher amount and also to hold some money aside to buy on dips too, if they are so inclined to attempt to take advantage of dips when they happen.
It is a very common world in crypto currency Buy the DIP, and HODL! Buying the dip means trying to purchases so that you buy assets when they have dropped in price, assuming they will continue to rise in value. If you look at a crypto chart, especially one that looks at a long period of time, it may look like the lines that move up or down are relatively flat. In reality, crypto asset prices are volatile and those flat lines include peaks and dips. If you can buy stocks that have an upward price trajectory right after a temporary dip in price, you can earn a greater profit than if you bought them at one of their peaks. Most of the time it is very difficult to purchase from the dip. If you are able to buy from dip and hold it for some times then you have the chance to get more
This thread is only about bitcoin.. so whatever you are talking about related to "crypto" is off topic. Sure some similar strategies might work, but different analysis is likely in need of being made when considering any coin other than bitcoin in terms of your timeline or even the extent that there might be long term feasibility at all.. beyond some kind of pump and dump expectations. TLDR: fuck shitcoins.