Here in Australia, There are constant horror stories of airbnb owners houses getting trashed from parties or fights breaking out.
Understandable for the owner wanting to protect their property or even use footage to give to police as evidence if a fight/stabbing occurs.
Camera was not in bathroom or bedrooms so I doubt the intent was for some pervert to spy on anyone in that way.
You don't really want the camera's standing out like dog's balls if you will pardon the expression, They are likely to get smashed or covered.
But at the same time concealing them is always going to look dodgy from others point of view, Even though it's more aesthetic.
It's a catch 22, You list your place as having a security camera and no one will want to rent it, You don't have one and risk having your place trashed with no evidence.
Maybe there needs to be some perks from airbnb company for clients renting places with cameras, Along with better deals/perks on insurance for owners having cameras?
And obviously change public listings to display a symbol for having cameras or not.