they’ve been so focused on the fact that they are on-camera 100% of the time and they don’t ever want to be seen to be doing anything “wrong” during that time.

For no-camera companies, it seems to me that those people are usually more engaged with actually listening to the conversation and responding in real time during the meeting

This seems to be a dichotomy between "producing Being Present In A Meeting" (a short documentary film of a person staring directly at the camera, knowing that looking away will be interpreted negatively; a species of hostage video), and participating in a conversation.