Thanks for sharing this! I've always wondered why the browsers themselves can't implement this type of feature to improve the web. I assume it's some legal factor.
For Chromium based browsers... why would the advertising based company make it any easier for users to opt out of advertising. The optimal resolution for Alphabet is users clicking "Accept All" and writing their member of the EU Parliament in frustration.
Well yeah, obviously? Why would anyone ever respect the "do not track" header? The whole point is to get people to click "accept all" out of fatigue or apathy!
Brave just disables the cookie banners (they don't even load), while this fills such forms if I understood correctly. Somehow I get very targeted ads in other apps after using Brave, so I tend to use firefox-based browsers for personal (i.e. any not work-related) stuff.