…reverse what?

“several changes made by google to chromium”

uBlock already solved this issue

No, they don’t. They released a lite version that will attempt to do it’s thing in the limited environment of up to date chromium browsers.
(Edit: here are the differences between the normal and this lite version as explained by the developer: https://libreddit.pussthecat.org/r/uBlockOrigin/comments/1067als/eli5_ublock_lite_vs_ublock_origin/j3h00xj/?context=3)

And then here is something new that shows how google can not only easily control chroimum based browsers, but basically every other one too, by creating their own definition of “open web”:
Their vision: https://github.com/RupertBenWiser/Web-Environment-Integrity/blob/main/explainer.md
Users thoughts: https://github.com/RupertBenWiser/Web-Environment-Integrity/issues
A specific issue (there are more) where the standpoint of googlers (you are dumb! (does not explain why)) and the users (we don’t want this!) can be clearly seen: https://github.com/RupertBenWiser/Web-Environment-Integrity/issues/36
Discussion on lemmy: https://lemmy.blackeco.com/post/25574