Wait, so, you can choose NOT to rent to me because I'm gay/male/Scottish/a Republican, but you're also disallowed from saying "Sorry, no gays/men/Scots/Republic

Wait, so, you can choose NOT to rent to me because I'm gay/male/Scottish/a Republican, but you're also disallowed from saying "Sorry, no gays/men/Scots/Republicans"? What an excellent way the time of people looking for housing.