If they aren't actually gay, then this is not only pointless but juvenile. Posing in front of what you perceive as your opposition is nothing more than vain, and it makes zero change. You have to start a constructive dialogue and face the actual issue. This is equivalent to giving them the middle finger and then running away.
It's a light hearted snipe at the place. They never claimed they were there to break ground. Take the joke for what it is and relax.