Not sure. YouTube broke it on their own end – and conveniently only for Firefox again. 🤔

From what I read last week, basically they were sending chunks of the video stream in a completely invalid way. Essentially saying a new chunk of the video begins at an earlier frame than the last chunk ended.

Maybe they mean compiled without it entirely instead of disabled by default, but still available?

Snapchat has been a shit company for years. They threatened to sue third party client developers for Windows Phone, they purposely degrade camera quality on Android, etc (For awhile on Android they were just screenshotting the viewfinder instead of actually using the camera APIs.)