>Camera on all the time so someone could just pop in and start watching at any moment, even not during a call?

That's not at all what I meant. I don't think it was how I typed it, I grant it could be, but you might want to read my original comment again. I am not advocating for just sitting there in your Zoom Personal Room, camera on, all day every day. That would be insane. But for synchronous work with others, a camera on that lets me know you're there, listening, providing feedback with body language? Thats why shit just gets done faster in person. Remote teleconferencing is low bitrate on the human communication spectrum. At least, lower bitrate than being in the same room. Cameras increase that bitrate.

In my meetings in Zoom, (scheduled, 1 hour, normal), everyone on my team has cameras on almost all of the time. I don't even turn mine off if I step away to grab the coffee pot from the kitchen, it lets people know immediately I'm not able to speak but can hear them fine.

One hour with a camera pointing at my face is like one hour of someone staring into my eyes. It’s exhausting and feels gross.