Forking is indeed the way forward when Mozilla loses its way a little more. For myself, I switched to Librewolf about 6 months ago, along with replacing Thunderbird with Betterbird after using it since the Phoenix days.
I cannot remember what prompted the move to Librewolf, it may have been the AI stuff they were pushing at the time, or possibly the update that forced the tabs into my titlebar without having to go into about:config to fix it. Or the fact that Firefox was constantly pushing me to sign up for an account. There were quite a few gripes that added up over time lol
Betterbird restored some removed things I liked pre-supernova as well as a native systray icon under Linux and that was enough motivation to make the switch.
It is time for a new browser to enter the market. Either Ladybird or something built with Servo seems likely.