Browser implementations and UI only. No law or regulation whatsoever.
This is just back to square one with people installing extensions. Not a bad way to go but doesn’t improve privacy for all. But if that’s what people want then it’s fine.
I don't get your point, because a cookie banner is not improving your privacy. what is square one? and do you think some EU bureaucrat would solve "online privacy" by writing some law? don't their action exactly proof the opposite (with upload filters, chat controls, whatever it's all called, etc.)?