Anecdotally, I'd disagree with this statement. It seems people pay for it because the video is more reliable than web apps and skype.

It's really rather basic stuff: "Schedule" is used as a noun but it can also be a verb, so bad choice of labels. To admit someone to a room I have to bring up the partipants chat. Wtf. When I'm in another application whilst awaiting people to join I have to keep checking, why not a notification and sound when they join? If I'm trying to join a meeting in similar situation, I can't work because there's a window blocking my screen (Mac). The constant suggestions of dial-in audio (wtf) are annoying and confusing. etcetera, ad infinitum. Additional complaints: there is a weird bug that causes audio quality to drop to "tinny phone" levels when using airpods. They fixed it. And now they broke it again. The white balance doesn't work and I can't adjust it...

Don't get me wrong, I use it because the video works with groups and doesn't stutter often. But the UX is awful.