It is difficult to convey this because, in the end, you have no idea either so you don't know whether there is useful stuff on YouTube or if I am just talking nonsense too...but it is so bad, and it gives the misleading impression that picking stocks is very easy. It isn't, people do CFAs (allegedly, a hard exam), MBAs, and work in fund management every day for decades...and will never come close to being profitable (indeed, what is amazing is how many people have no knowledge but end up doing okay...it is remarkable...the post is a perfect example, no content, no apparent understanding of investing...somehow the guy is a billionaire from investing, like Chamath...amazing).

It is gambling (the distinction between gambling and investing is information), what most VCs are doing in the space is financial terrorism (stuff like WealthFront is an unbelievable scam, it is 1980s-style financial advice), and most people should take your approach (although it is still very easy to go wrong with 3 ETFs...most people will get there though).