If they have a setup that can display and content that they want to watch in 4K without their laptop burning a mark on their lap, then that's a valid use case.

If they have a setup that can display and content that they want to watch in 4K without their laptop burning a mark on their lap, then that's a valid use case. An use case that doesn't work with Firefox at the moment because of Firefox. "You're holding it wrong" is an incredibly inane attitude.