The name of the game for a lot of traders is to have a lot of a...

The name of the game for a lot of traders is to have a lot of a share / token etc before you start telling random people to buy, then they buy your shares / tokens at the top. If you follow the inital momentum and get in before the pump there is a lot of money to be made, all be it not a sustainable model. And if there is something that you believe in long term that you can do this with then that is perfect, GME / silver were not trades that I was interested in at all but I wouldn't have had of a problem with my friends or family buying btc at 40k so long as it was a small % of their net worth and they weren't going to move it for 12 months +
But yes, I agree with you. Anyone who claims after the fact to have ingenius insights in the market is not useful, just as blindly following a herd on the internet is not a wise move when it comes to your opinion or your money