Well I want all extensions to work on my Android phone so I use Kiwi Browser. Same for pull down to refresh. Same with having fast browser. Firefox offers none of these.

As for desktop I went from Firefox to Edge, then got tired being scared of every update MS making UI more and more hostile with each update and switched to customizable Vivaldi. Firefox was always slower and more memory hungry than Chromium and years of optimizations didn't change that.

Btw. what happened with Latest version chart in bottom of page?