Earlier quoted context omitted.
I encourage everyone to use Firefox on Android just for the one killer feature of being able to install the full desktop ublock origin plugin.
Yes!! When I see other people browsing on Android without uBlock I'm in awe of their patience.
I use an old phone (until Librem ships...) and I switch back and forth between Chrome Beta and Firefox... they each piss me off. Firefox is slow, I've tried the newer fenix system and it's not really better, plus it crashes a lot. Especially on sites like mobile twitter, probably in part because of the overhead of uBlock having to fix up the DOM; essentially the crash is a failure in handling a system out of memory error in a low level part of the graphics stack that mobile chrome had a long time ago too but managed to fix years ago. Recently chrome pissed me off more because when I tried to take a screenshot of a tweet with a funny google translation, chrome+android colluded to block it because of some issue like "the display contains protected DRM content." Firefox, no issue, apart from crashing 10 minutes later. At least I haven't lost my tabs to a Firefox crash (mobile or PC) for many, many years.