I really like the point the uBlock maintainer's make:

"Extensions act on behalf of users, they add capabilities to a user agent, and deprecating the blocking ability of the webRequest API will essentially decrease the level of user agency in Chromium, to the benefit of web sites which obviously would be happy to have the last word in what resources their pages can fetch/execute/render."

What if someone would create a pull request to implement unlock origin natively inside chromium, instead of an extension. If such a PR met all technical criteria, would Chromium project accept it?