I'm an Airbnb host in the same area as you. I believe issuing multiple permits to one owner (or management company) is having an extremely detrimental effect on the local community and on regular Airbnb hosts.
A company called "Hideaway" purchased the rundown house next to us and spent the last 6 months remodeling. There have been an endless stream of trucks and workers, it seemed like a different crew every week, incredibly disrespectful working before and after allowable hours and leaving mountains of trash to blow all over the neighbors' yards.
Throughout the remodel, there was no "owner" or responsible party I could talk to about any concerns. Just a construction foreman who was rarely there, and who never provided any contact info when asked about the owners.
This company rents out 14 different homes in the area, all renovated in the same hideous style, charging between $900-$5,000 a night. They put 2 beds in every bedroom to maximize the capacity for these generic party houses.
If we're going to have a permit process and the county is going to take money to oversee the STR landscape, this is precisely the sort of neighborhood destroying behavior that should be disallowed. It would be a simple enough thing to reign in these corporate STR monopolies by limiting the number of properties a single person or entity can own/manage.