Seriously, having to opt-in on a per-site basis has led me to loathe the GDPR. It's a usability disaster. I never thought I'd hate anything more than the "sign up for our newsletter" pop-ups... but these are even more pervasive.
If I'm the kind of person who hates cookies/tracking, I'll just install a blocker and block it everywhere, and then whitelist any domains I need to.
It just makes me feel like the GDPR was a win for lawyers and legalese, and nobody else.