Gentlemen, shall we analyze this for what it is with a redpill lens. Her statements are part of what conditions us. These statements add up on the subconscious. They are based on a set of bluepill beliefs and ideals.
"I'm going to assume its a guy that said that."
What a loaded statement. She says that hinting there is something wrong with that belief. Since it is an "incorrect belief", a man must have said it.
"Assuming you can find one,"
This clearly indicates many things. Since she assumes only a man would be against gay marriage, she assumes women support it. Therefore, since the man does not bow to agreeing with women and the gynocracy, he will have trouble finding a woman. Get on the plantation! You don't have a chance with women unless you fall inline. That's what these small "jokes" are designed to make you think.
A young man hear's this and thinks, "Oh no. I must be agreeable and woke to get women!" He then states, "I support gay marriage. I am a gay ally!" He thinks that will surely curry favor with the ladies.