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
You can’t legally donate to Firefox, as it is developed by a Corp (Mozilla Corp.).
Donations go to Mozilla Foundation, which does… other things with you money (advocacy and, frankly speaking, a lot of unrelated crap) In other words, your money don’t go towards FF development, so you may want to think twice before donating.