I don't think it's just the fact that his videos are expensive click bait where he throws money around... it's the fact that he has some very shady, borderline illegal(maybe actually illegal?) practices. the livestream marketing the chocolate to children to win entries into giveaways that he then scrubs from the internet are probably not legal is one example. there are a few videos on how scummy he is. I think the visceral reaction to him as some kind of genius is warranted.
that said the pdf has some nuggets of wisdom even if it's from a tainted source.
I'm not a fan of Mr. Beast but it's quite a phenomena and human nature being something universal I'm sure there are some interesting nuggets from how that business is run.
I also don't get or watch reality shows from more traditional media.