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
They want to go back to the days of websites requiring internet explorer... just this time with their browser. Even though getting away from that culture is most of the reason people ever switched to chrome. I will say though, just using firefox for everything you can isn't enough of a protest. If this goes the way Google (Alphabet I guess) wants it to, you bank will require you to use a browser with DRM. You will be forced to use a browser whose source code you can't verify as secure, to access your bank. And that is where the protest lines need to be drawn. If your bank does that? Send your message. Close the account. Take back your money. Now I'd personally do this for everything possible, but that would be a looooot of time spent getting very little across to companies that don't care if you visit their site. Taking money from banks though? Yeah it might be a whole process where you gotta request it, verify in person, wait a week to get the cash, and THEN close it, but so what? A couple hours of doing stuff and then a week of business as usual before a couple more hours opening a new bank account. That's more than worth doing to send a REAL message.