Beach Bum? Nuh.

Tried watching the Beach Bum, but I really didn't get it. It felt like someone was trying to re-make Big Lebowski, but all of the main actors got terribly stoned just before the shoot and it was just cringy.
So, this guy is supposed to be this popular stoner bum on Florida Keys, but he's actually rather mean - he kicks a trombone player off a pier for no reason and then laughs about it right away .... I mean ... why?
He's supposed to be super bum-like, poor and disheveled, but in truth, he's super rich. Like we've never seen that trope before.
He's fucking nameless hotties and gives his wife oral in front of the maid (while she blabbers on about completely boring stuff that's supposed to be contrast or something?), but when he finds she's cheating, he gets upset. Then he drunk-drive kills his wife at his daughter's wedding.
He writes Pulitzer-Prize winning poetry, that I saw zero trace of in the film.
All of the attitude, dialogue, even how the actors MOVE feels impossibly forced.

I just didn't get it.
I can think of five movies who take on this exact same premise better, with actors far less A-listy.
:/