Unfortunately, a service that connects people with other people directly to rent their homes is always going to have issues like this.
I'm not sure that it's fair to expect Airbnb to "fix" this. Why? Because if they prevent people from discriminating on the very evil dimensions of race, gender, sexual identification, religion, etc, then they will also prevent people from discriminating on the basis of reasonable factors like "5 guys from 19 to 21 from a fraternity".
I'm not sure that it's fair to expect Airbnb to "fix" this. Why? Because if they prevent people from discriminating on the very evil dimensions of race, gender, sexual identification, religion, etc, then they will also prevent people from discriminating on the basis of reasonable factors like "5 guys from 19 to 21 from a fraternity".