A nitpick, perhaps, but isn't that three orders of magnitude?
We've already seen people use outlandish backgrounds in calls, now it's going to be possible to design similar outlandish views, but actually be this new invention in real time. There's been a lot of discussion centered around deep fakes and its problems, this is essentially deep faking yourself into whatever you want.
Video calls are a very important form of communication at the moment, if this becomes as accepted as background modification, that would open the societal door to a whole range of self presentation that up till now was restricted to in game virtual characters.
I wonder what kind of implications that could have. Would people come to identify themselves strongly with a virtual avatar, perhaps stronger than their real life "avatar"? It is an awesome freedom to have, to remake yourself.