Well, that's kinda the point, but way too many website owners rather torture their users with barely compliant implementations than do what the GDPR intended: get rid of third parties.
I'm positive informed consent doesn't require cookie banners, but the advertisers opted to make it as annoying as possible so that everyone would click "accept" just to be left alone. It could be a browser mechanism that only asks once for all sites and have a whitelist.
Well, that's kinda the point, but way too many website owners rather torture their users with barely compliant implementations than do what the GDPR intended: get rid of third parties.