I work across 5+ desktops (phy and vm) over the course of the day, 3 running multiple Ffx instances + forks. I support and maintain several dozen more Ffx installs for clients. Mostly because Firefox is the most capable (ex:containers) and trustworthy of my browser options.
Of the few problems I have, some are due to my unconventional setups - like the one I'm typing on now. It's a remote app, running on a vm w/ a copy of a profile storing logins.
I presently don't have any Ffx issues pending. Ironing them out took less time and energy than posting a rant about it.
I'm not doing anything weird and nothing in my setups changed, it all started after a recent Firefox update. I've been trying unsuccessfully to resolve the issue for weeks.
Just because other people aren't having problems doesn't mean I'm lying about my experience or that my comments need downvotes.
I love Firefox and only mention anything out of anxiety that enshittification is coming for it, too.
Storage is cheap enough that this attitude is possible.
But I guess keeping all of your designers aware of it across thousands of teams is too hard.