Yep, I acknowledge that is a possibility, but it would also lead to them having permission to display literally the entirety of my videonconf calls to anyone, for advertising purposes or some other purpose that only incidentally benefits me. That would be a strained reading IMO.
Additionally courts consider the fact that users have little if any say in the terms and thus tend to take the most restrictive but still reasonable view of any uncertainty in the terms.
Basically "if you wanted it you could have asked for it, if you didn't then that is a problem".