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.)
There’s a lot to be offended by — in addition to the awful acting — but they don’t care. They have their stereotypes and illogical talking points and they’re not backing off. It’s the sort of thing that has young Christians fleeing the church in record numbers.
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.