Well it is about people thinking they are above other people. For that they need a scapegoat.
Going back in history, when there were slaves, Christians did the same thing when liberal minded people were for the abolishment of slavery. They would say the Bible approves of slavery, which in some way it does appear to, depending on your context (and throwing out the context of civil progress).
In this case it is saying that the Bible is against homosexuals. But is the whole Bible and everything it stands for about being against homosexuals? What people do is take an ancient context, and try and make it a modern context. This is how they justify a modern view, and if they can't win, they say that the modern world is more hellish than ancient time.
But if you ask someone who is anti-homosexual, if they are pro-slavery, then you see why I find it hypocritical. People take things from holy books, put them in a context that justifies their own thoughts and actions.
What ever happened to the message of love Jesus gave us, and knowing with all your heart that God is Love?
If they don't like civil progress and think that they are fighting a battle they will win, when it is obvious they won't because it is civil progress rather than backtracking (logically) then why don't they go live in a country where homosexuality is banned? That's right, they appreciate the civil progress made in the civilised world. But you can't cherry pick things and say I like that but don't like that, it is a pointless venture.
Is it civil progress that homosexuals are not killed and castrated and murdered and abused, as much as they were in the past? Or would someone prefer to go back in time (backtrack). I'm pretty sure going back to suppression is not civil progress.