Using a Firefox fork makes any difference?

Well, Mozilla seems to be making some pretty questionable decisions, So I'm considering switching browsers for the third (Is it the third?) time. The thing is, I really like the way Firefox works, so I've been trying out the more famous Forks like Waterfox and Librewolf, although I'm going for Floorp. However, I'm wondering: is using a fork enough? I mean, they are Forks maintained by other people, but is there a chance that whatever Mozilla does to Firefox could affect those Forks? Should I jump to a totally different browser like Vivaldi?