>those in charge of the cookie banners really believe that they protect the interests of the user No, they're asking for consent to track because the EU demanded it. The easiest way to avoid having a banner on your site is to... just not have an analytics package on your site. They're aggressive because they don't want their data spigot turned off - hence the work-to-rule nonsense. You should not infer any benevolenc…
If you're running a site, it's just safer to ask than to assume that you know your site is not tracking users.