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
It kinda makes sense. All the people who know better already use an ad blocker so they don't know what it's really like and all the people who don't know to use an ad blocker don't know any better and that's just what the internet looks like.