Ok, maybe that was my slight misreading of the situation. It definitely involved use of the webcam without user consent, however. And an attacker could make you join a meeting that they control, effectively being able to watch and hear you.
Oh absolutely. I'm not trying to downplay the serious nature of the vulnerability, particularly because it also lead to the possibility of remote code execution. Just want to keep the record straight that at no point did this vulnerability allow people to actively spy on your legitimate meetings.