Great job @mozilla, you finally made me gather enough spoons to not just move away from your browser, but from firefox-based browsers altogether.
Now, I'm not fully happy to be on Vivaldi, as it's a not fully open source Chrome wearing a silly hat, but I'm also not in the mood to just hope that whatever firefox downstream browser I would choose will keep up to date with both removing all the AI nonsense you add, or to merge security patches in a timely manner.
That said, the moment @servo is mature enough to spawn a good browser, I'll move there.