looks like rendering adblockers extensions obsolete with manifest-v3 was not enough so now they try to implement DRM into the browser giving the ability to any website to refuse traffic to you if you don't run a complaint browser ( cough...firefox )
here is an article in hacker news since i'm sure they can explain this to you better than i.
and also some github docs
100% agree. The few times I have to turn off uBlock because it is breaking some obscure website it is always an awful experience. Auto-playing videos, ads taking up half the screen, and those annoying as fuck cookie banners. I can't imagine using the internet without an ad/cookie blocker. I accidentally turned it off on Lemmy for a while and it was the only site that I didn't immediately notice.