I'm seeing lots of "Turn off Chrome's Ads-related APIs" being presented as some kind of "gotcha" defeat for the Privacy Sandbox effort. Um.
One of our big goals was shipping use-case-specific APIs, exactly so that people *could* control ads stuff in the browser without breaking unrelated things. I'm sure that many people being loud about these new APIs also told everyone to turn off 3p cookies years ago — except they couldn't because of the collateral web breakage.
I designed this stuff, and I *still* think it's great that you can easily turn them off. This is browsers working as intended.