I don't think Brave are doing substantial Chromium development. They turn off a bunch of features, in their fork, but I don't think many changes are flowing bac

I don't think Brave are doing substantial Chromium development. They turn off a bunch of features, in their fork, but I don't think many changes are flowing back upstream, they're mostly focused on the Browser UX layer than the Engine layer, much like Arc, and arguably Edge (although I think Edge does contribute some back).