Of course there are people out there who get too greedy for their own good.. .. and sometimes they can still profit from their efforts, yet historically, we have seen a lot of those kinds of guys waiting around too much for lower prices, not acting and even selling too much too soon.. or like you said the other extreme is buying when the price goes up rather than buying when the price goes down or just buying regularly no matter what is the price.
So there are a lot of weird perspectives, and the main thing seems to be that we try to create systems for ourselves that we have decent confidence are solid, and we cannot necessarily expect that others are going to follow our methods or that they will be able to figure out some kind of a meaningful long term BTC accumulation strategy for themselves.. even if it might vary from our own..
Yes, there are many different perspectives and approaches when it comes to investing and accumulating Bitcoin. Every body has his own goals, risk tolerance and strategies, so what works for one person many not work for another one. it is very important to develop your own plan that fits your circumstances, and stick to it, rather than constantly chasing market trends and copying others.
In my opinion, the most effective strategy in view of long term potential would be to consistently acquire Bitcoin during significant downtrends, and wait for the bull cycle to realize your profits if you choose to do so.