I think it's a joke thread, but there may be a little subtle bashing going on, not restricted to Catholics though, all Christians are fair game it seems.
By the way, I don't think many Christians believe absolutely every part of the bible as direct and literal truth. I personally know a LOT of Christians and only 1 believes the Creation story as a literal truth.
I'm happy to believe in unicorns that move in mysterious ways though, it sounds nice.