Internet's biggest annoyance: Cookie laws should target browsers, not websites

I disagree that this should be in the scope of a browser.

Cookie banner are called cookie banners because they‘re most frequently associated with the opt in for tracking cookies, but this kind of opt in is required for any kind of third party involvement that goes beyond technical necessity.

Your browser has no way to tell what third party present on the site is a technical necessity and which one isn‘t. So you‘d have to tell it - making it part of the site providers problem as well. But this time its worse, because responsibilities are mixed between the site operator and the third party.

Right, the it would be legally required have to have "third-party" vs "strictly necessary" tags on the cookie itself, which someone could challenge if they were inaccurate (in the same way that the GDPR can in theory be enforced now). Then the browser could simply do what the user wanted with the tags. This could even be a status item in the URL bar, similar to the HTTP / HTTPS icon, that would allow you to enable or disable tracking on a per-site basis (if you didn't want a global policy).

Small website operators would still need to be savvy enough to make sure any cookies their website served up were appropriately tagged; this would ultimately come down to ad networks / analytics companies documenting the behavior of the cookies they add.