@joeyh Full ACK. It's enough for me that a fresh Firefox constantly tries to autocomplete what I type to 'facebook.com', 'whatsapp.whatever' and similar, although I've never visited those sites and never want to.
Firefox was just the 'a little bit less annoying browser' since around a decade. Enshittification. I really hope there will be a usable fork or a patched version in Debian.
I really don't know yet how I'd deal with it if not.