The OS of the web crippling extensions and plugins because it hurts its ad-business is not what I would call "being focused on user-control". They're focused on control, yes, but not in our favour.
The problem is that OP used Chromium as an example of a project "focused on user control" when in fact it is actively trying to remove control from the users's hands.
I was citing extensions and Manifest v3 as an example of that, I don't care about the feature and what people can do to go around this.
This is opensource working as intended - someone else can build it with feature set you want.