Well technically they aren't trying to stop gay people from eating there, they are trying to stop gay people from working there. And that is just wrong. Although I have lots of gay friends and most of their opinions amounts to ...why go where you aren't wanted? I mean for minimum wage, go work some other fast food place. Still, firing people based on sexual orientation should be illegal in all states. It certainly is in NY.
BTW I have never eaten at one of these... I don't think there are any in NY.