Damned if you do, damned if you don’t. Disabling WebRTC would make your Firefox instance extremely unique and thus easily fingerprinted.
Having WebRTC enabled can be dangerous for other reasons. You could be seeding a torrent unknowingly just by visiting a website. This can turn into a freaking disaster if you live in country like Germany.
It's a shame that browsers don't ask you for WebRTC like they do with webcams.
Only to a webserver and thanks to CORS not to any webserver. There is no benefit for a website doing that - unlike with sharing a torrent to other internet users.
The problem with torrents is that they are actively watched by "Abmahnanwälte" (lawyers who make a living by suing copyright offenders).
> And it's going to be hard to hold you liable for data uploads that someone else initiated and you didn't know about
yeah good luck with that. All they see is your IP and then you can try to explain how this happened and how you are totally innocent.