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
Agreed. It's like people forgot about Microsoft and IE. They also had drm options in the browser. Anyone remember Silverlight?
And how did that work out for them?