>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…
Personally, I think that despite seemingly good intentions, this common practice is counterintuitively harming user-privacy and security, especially on mobile where the banners take up a large chunk of the screen.
Many normal people get something like "banner-blindness": they are so used to seeing banners requesting confirmation when they visit a website that they by default click any random buttons they see to try and hide them right away without reading what is requested.
This practice doesn't really help anybody, IMO, and should probably be handled on the browser-level if people care about it.