Yourqueen1 As a viewer, I disagree with a lot of what you wrote. For me, the VR cams are about live, intimate entertainment, with just a small bit of interactivity.
A key factor is eye contact; the model should be looking at the camera as much as possible. It's not entertaining to watch the model looking at her computer monitor. Viewers posting chat comments take her eyes away from the camera.
Posting chat comments within a headset is very awkward compared to typing on a keyboard. Particularly if I have paid for a brief private session, I don't want to waste my money (and time!) trying to type a message instead of watching the model.
Do you really think freeloading lookie-loos (non-tipping viewers) should be posting comments? If I browse rooms of models I have never tipped before and have no intention of tipping during this visit, my instinct is to just lurk silently, and not to interact without paying something. At such times, you may "feel sorry for" me passively watching, but I feel sorry for the models who have to waste time and attention on the comments posted by the lookie-loos.
But I certainly agree that any time a viewer makes a request and the model complies, the viewer should say "thank you" afterwards.