I love this, but I think it's one of those ideas, where people dismiss it as impractical at the time, but then it comes back in force a couple of years down the line.

IF video conferencing is here to stay, then we would expect to see more larger screen consumer[1] devices appear with it built in. This has started to happen - Facebook has Portal and Amazon have Echo Show. Scale that up to a on-wall TV of 50"+ and you've got your room-size video conferencing setup, at which point gesture control will be a very nice add-on.

Right now though, people are still wrestling with how to do video calls, whist at their desks or with laptops on their laps.

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[1] Yes I know, that corporations have 'video conferencing ROOMS' with massive screens and multiple cameras but those are mega bucks, and not deployed en-mass.