The joke isn’t on gay people. It’s on Faith2Action for thinking this is a valid comparison. (Hell, adulterers can at least get married in every state.)
This is the sort of video you would expect an LGBT group to make to mock Christians’ narrow-minded thinking on the subject… Instead, the Christians here went ahead and did the work for them. They’re proving to the world how badly they don’t get it.
I hope this film gets wide distribution. People need to see the depths the Christian Right will sink to in order to delegitimize LGBT people.