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ublock Origin can get rid of Cookie Banners
(www.kevinthetechguy.ca)
This is a most excellent place for technology news and articles.
Browsers already have the do not track header, it should just honor that. If you have that set it should be an automatic opt out no banner necessary.
Unfortunately, it was deprecated in 2025: https://en.wikipedia.org/wiki/Do_Not_Track
I once saw a German website (idealo.de) doing exactly what you said. If the header was set, they skipped the banner and interpreted it as "minimum cookies".