The implication being that Firefox should not even bother trying to compete and win new users, all it needs to do is please its ever-dwindling userbase of grouchy geeks.
No implication intended, I just forgot to be exhaustive. Yes, the current userbase is pretty close to what you describe, and Mozilla has been extracting their goodwill like it's an unlimited resource.
But I'll ask outright: what new users is this supposed to attract? Nobody asked Mozilla for AI. I don't see anybody excited that it does AI better than other browsers. The de facto MoltBot browser is Safari, which is AI-free. The AI fans have a glut of AI-first browsers to choose from, so... Who is this going to appeal to?
I say "appeal to" in the active sense too, because Mozilla's own promotional material seems to take an almost apologetic tone to even having AI at all,
Control and choice built in
Customize how AI shows up, or turn it off entirely.
AI, if and when you want it
Firefox approaches AI with intention, not obligation. AI features are optional by design and will remain that way.