First reddit didn't go down, despite having an user base which had some kind of a brain.
While YouTube has everyone as users. Even like the most normie, boomer, zoomer users that think YouTube is the internet. No way they are going to switch for ideological reasons, unless the app just stops working.
I wouldn't really mind a smaller pool of videos, if it's guaranteed to have a standard of quality.
I'd even pay for YouTube if they offered such a service, where they curate their creators. E.g. I sometimes like to watch repair channels where someone tinkers with something. I have a handful of channels that I like for that… but what if there are many more that I just can't find?