Surprisingly, that's not enough to be competitive with the browser that's already installed on people's phones.
So no, Firefox still doesn't support extensions on android and hasn't since they disabled them years ago.
THIS is why people like me don't use firefox on android and use chromium-based browsers instead. At least, they let me install the add-ons I want.
That's the complete list, yeah. It's utterly ridiculous and insulting.
You can get around it by making an online collection of extensions with a Mozilla/whatever account, but you can't install from files.
I largely agree, it doesn't meet my bar for "supports extensions" :/ hence at the very least "significant step down" - that much is at least not contentious.
Left hand, meet right hand.
To this day, swathes of people who were involved in this effort (some of them very prominent) are utterly convinced that it wasn't the demonstrably bad idea that it really was, but more like a case of just plain bad luck in the marketplace. Meanwhile, they sat by ineptly as ChromeOS became much more successful for the laptop form factor than FirefoxOS ever was on any device and Electron started charting its ascendancy with more and more non-mobile apps jumping aboard over time.
So congrats to the corporate geniuses who pissed away the head start that Mozilla as a project already had and then proceeded to do absolutely nothing even when it became clear that there, in fact, was tons of interest in a cross-platform framework for desktop/WIMP apps, contrary to management's insistence otherwise. It's a masterclass of incompetence that doesn't get nearly as much attention as it should.
The rest of it, yeah. Absolutely agreed. Electron not having a Firefox equivalent in particular strikes me as a major, multi-year... not oversight, that's far too polite. Self-ostriching? I'm continually astounded beyond words. The market is massive, and nauseatingly ripe for competitors.