What would be great is the same feature for rescheduling.
Sometimes a meeting is important and shouldn't be cancelled, but the scheduled day/time ends up being inconvenient for one reason or another. Not inconvenient enough to justify claiming a last-minute conflict, but enough that you would still rather do it another time if it turned out that everyone else was in the same boat.
It should be if everyone (or everyone but one person) swipes left, the meeting is cancelled--can't have a meeting with one person. Or maybe notify the only person so they can revise or reschedule it.
To be fair, if one person thinks the meeting is worth it, it might be worth it. I've been in more then one meeting where everyone think they know what's happening correctly but everyone had a different interpretation and understanding of what actually needed to be done.
Well the person who scheduled the meeting clearly thinks it's important, so they aren't going to be swiping left on their own meeting. I don't see how this gets many meetings canceled, except maybe standing meetings that nobody wants to go to this week.