Youtube makes money from ads, unlike other video communities like onlyfans , so most likely the cut that creators take doesn't cut it. Currently it seems creators use it as a social tool to raise awareness of their moneymaking product , but that leads to more and more videos being ads themselves, which is leads to google's recurring issue: spam.

If youtube made money from subscriptions the interests of youtube and creators would align better. As it is now it's on a spiral of more and more spam and self-reference which will eventually turn it to a ghost town (because unlike google search, all the video content is in their platform)