This is something that Zoom has, and was mentioned on a recent call. People were using random backgrounds (including a photo of a prison..) and the message from leadership was "We need to have a corporate background for everyone to use."
I think the green screens are one of the best parts of Zoom!
Well, this is at best a rumor, not sure why it was posted here.
I work at Microsoft. It is true that the Custom background is already a feature of it's internal "Elite Program" versioned Teams.
Also, access to AOE 3 Definitive Edition is available.
It's not a rumor and it works fine. Should be there in public channels next quarter...