Oh, I support Gecko. More browser engines to compete against Chromium the better. I just can’t use Firefox in its current state right now. Thankfully, Pulse seems to be picking up the slack in places.

Edit: I’ve thought about it a bit, and honestly, even if you choose a fork of Firefox, that still supports Firefox. If Brave, Vivaldi, Opera and Edge are all Chromium and that’s a reason that Chromium has flourished, the same will ring true for anything that forks Firefox. One of Pulse’s aims is to make tooling for building a Firefox-based browser easier, and their fork is part of that.