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
In a world that now has stronger cryptography, attestation and surveillance capabilities? I can assure you Round 2 would go vastly different. There would also not be a Round 3.