It would seem like they relaxed rules about what's in the background. But then, my knowledge is from a Telepresence room having been setup at a previous employer somewhere between 10 and 15 years ago (and I wasn't directly involved).

It would be interesting if a camera was on top of every tv, so that you have a 1-to-1 with every recipient.

That way, when you turn your head to the person on each tv, it would seem as if you were actually looking at them.

Getting off topic here, but this makes me think of what can be seen now in some Japanese programs because of social distancing measures. I don't know what kind of setup they have, but in some programs, from the spectator's perspective, you see people lined up behind a table, but some of them are actually on large monitors that make them appear at the right size. The interesting thing is that the ones on monitors act like if they were actually there, turning their head in the direction of the person speaking.

What Japanese programs?

ひるおび is one of them IIRC.