That is a more complex story then that. The manifest v3 changes primary give a lot of security and privacy changes that stop extensions from doing a lot of questionable things in the background on all your page you visit. But that does stop ad blockers from doing a lot of what they currently do - blocking in page elements and modifying the pages you visit. But it does not block them from blocking page requests so ad blockers like ublockorigin lite can still function in a more limited capacity to block ads.

I do think the teams outside of the chrome team are happy for this change - but I don't think the chrome team set out to do this purely or even mainly to block ads.

Besides even if they did it does not change my argument - whom ever buys chrome will likely want to squeeze it for more money then google currently are doing and will likely do far worst things like including ads directly in the browser. Or trying to monetize it in some other way.

I would love it if chrome where maintained by some non-profit foundation. But how likely is that going to be from a court order sell off?

I would rather they split up google in other ways first.