

You do not need to ask for consent to use functional cookies, only for ones that are used for tracking, which is why you’ll still have some cookies left afterwards and why properly coded sites don’t break from the rejection.
Most websites could strip out all of the 3rd party spyware and by doing so get rid of the popup entirely. They’ll never do it because money, obviously, and sometimes instead cripple their site to blackmail you into accepting them.
Blocking all 3rd party cookies tends to break quite a few things, as websites often use different domains to handle things like logins.
I’ve found addons like Cookie Autodelete to be a more functional option, it allows those cookies to exist until I close the tab, and if the domain isn’t on a whitelist, they get deleted five minutes later. And it works for first party cookies too.
It does take a while to build that whitelist, and sometimes you forget to set it and wipe something you’d rather have kept, though.