Which specific ones have you personally verified as preventing use? That's a public tracker where anyone on the internet can report something — in many cases issues are duplicates, unreproducible, or specific to certain edge cases.

I ask because that returns 351 issues but if you do the same search for Chrome you'll find 414. I would assume that you would agree that the correct interpretation of that is not that Chrome doesn't support WebRTC?

https://bugs.chromium.org/p/chromium/issues/list?q=component...

Since all of the major services work without issue in all mainstream browsers, I would argue that to a first approximation this is not an effective proxy metric.