When I was still a Firefox user, I just ended up blocking any domain owned by mozilla. And by 'when I was still a Firefox user' I mean 'until approximately 12 hours ago.' What priorities and values Mozilla has left I don't seem to share.
It's going to take me a few weeks of research to pick my new permanent browser. I want something far-removed from Google, but with an active enough developer community that it doesn't fall apart after an OS update or turn out to have a back-door hidden in the code base.