I read somewhere a long time ago that chromium is a "look, but not touch" type of foss project. You can fork it, fix it, do whatever you want with the code, but on the main chromium repo they rarely accept PRs from random contributors
Here is an article from 2020, about the first non google employees getting some rights in the repo, before that all decisions was made by google employees: https://www.cnet.com/tech/mobile/google-gets-web-allies-by-letting-outsiders-help-build-chromes-foundation/ This api was added in 2013
And the workaround for this issue is really simple, and it was recommended privacy wise for a long time: don't use chromium based browsers and don't visit google related sites, as much as you can.