I don't use AirBnB but doesn't the service cater to people who only want to rent to "their kind" of people? What is AirBnB going to say to a host who only rents

I don't use AirBnB but doesn't the service cater to people who only want to rent to "their kind" of people? What is AirBnB going to say to a host who only rents to college educated couples over thirty years old? Isn't that the whole AirBnB business model?