I posted an example above but instant book doesn't force a potential renter to be screened which makes it easier for destructive guests to book. If you're throwing a party, would you rather instant book or have to chat with the host?

As my example, if a renter instant books and is going to bring 40 people to a place you are legally approved locally for sleeping 14, other neighbors can report you to the city and you could be fined or lose your license to rent.

So you can have issues with instant bookers even if they aren't destructive.

> What evidence is there that instant booking guests are more destructive than others?

OP isn't saying that they are, they're saying that they now want to apply a new screen (out-of-town-ness) that they think is evidence of not being destructive, but would be unable to do so if Airbnb forced everyone to allow instant bookings.