This feature would help make that less likely to happen accidentally or “accidentally.” It wouldn’t stop deliberate leaks but that’s a different problem.
When we did his exit interview he admitted he just wasn’t thinking. He did it all in a couple minutes while in the meeting. Something like this would have stopped him in the process and made him remember that the content was sensitive.
Don’t underestimate the diversity of the people watching zoom meetings. It’s not all engineers with elaborate screen capture setups prepared for the express purpose of recording meetings.
If someone was going to do something dumb like that I wouldn't want them to keep their job now instead simply because the software prevented them from doing something so dumb or dangerous.
People do dumb things. The fact that it won't prevent a determined attacker isn't the point.
A big DRAFT watermark tends to clarify that far more easily and obviously.