You are clutching at straws here. Zoom fires an alert when somebody joins a meeting. If you're not paying attention, that's not Zoom's problem. If the alert isn't surfaced very well, that's an UX issue, but not a creepy privacy invasion. And if you expect to be able to use a platform which your employer has provided without any oversight whatsoever, I don't even know what sort of problem that is. Do you also expect to be able to lock the door to a physical meeting room, on your employer's property, and use it for your own private purposes unchallenged?