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
I will happily stop visiting any website that demands I use an approved browser.
Well, those of us who care all say that but I for one have to access government and banking websites in several countries, if they implement this I have no choice. This abomination must be prevented in the first place.
You can use Chrome for those websites if they completely break, and Firefox for everything else.
Banks and government websites don't tend to have adverts.
We can criticize the EU, but they would not allow or force people to install Chrome in order to access government web sites.