This is absolutely correct. A rising market makes everyone look like a genius.
Analysis is a weird game. You can be right only 30% of the time and make tons of money if your money management rules are good.
Is haejin good at TA? No - based on my almost 20 years in the game. The good news is that crypto is an incredibly volatile asset class so it almost doesn't matter. All his recent posts have been RandomCoin up 3498735% since analysis! And I'm thinking yeah... the whole market is up.
He's done a hell of a job of figuring out how to profit from content though.