How would that work practically? If they fork it sufficiently to not be tied to Google's decisions, they're once again maintaining their own engine (see also:

How would that work practically? If they fork it sufficiently to not be tied to Google's decisions, they're once again maintaining their own engine (see also: WebKit vs. Blink). If they don't, they'll be at the mercy of whatever Google decides (see also: Manifest V3 in Chrome).