There are far too many "luminaries" in the tech industry who've had the last 20 years of "must create value!" go to their heads, even in the FLOSS space.
When profit motive does not exist (and it shouldn't in FLOSS) then you need to stick to things like the UNIX philosophy and KISS (keep it simple, stupid) in order to create good software. Trends mean nothing when you're in this mindset.
It's Firefox. It's a browser. It does browser things; namely, it sends HTTP requests, possibly executes JavaScript, and renders the resulting computed data on a screen as HTML. It does not need to have AI integrated. At best, AI should be a downloadable extension.
If the group's leadership cannot comprehend this, then they need to be removed immediately and blacklisted from leadership at future organizations in the future.