Firefox cannot meaningfully stand up to Chrome's dominance with ~5% market share and dev layoffs. The iDevices and their locked in Webkit engine is all that forces Google to at least propose web standard drafts and keep up even the appearance of interoperability.
As a Firefox user, I'm not completely surprised. There are multiple video call applications I tried to use that didn't work on Firefox (on Linux at least). I personally have Chrome installed for the sole purpose of resolving those situations and go right back to FF. I'm scared though for FireFox, because they aren't doing too hot. I don't want a Google dominated web. Having the only two real web competitors be Apple and Google is a terrifying idea. Hell, it doesn't event have to be FireFox, I just want some more competition, but browsers are so complex at this point that I don't think we can ever get to that point.
I hear you, I've been working on peercalls.com, a video conferencing app, for the past few years and it works on all major browsers and platforms, including Firefox.
That said, I'm bummed out that E2EE using insertable streams / SFrame transform is only currently supported in Chrome.
I've also noticed that very few devs in the WebRTC community actually test stuff in Firefox.
Mozilla making a big song and dance out of resolving 14 year old issues like non-native context menus really rubbed me the wrong way and I uninstalled Firefox.
