Have you actually ready it?
I think it would help if such person after understanding that, did read it. Of course there is some stuff that doesn't make sense in today's world, but there is a lot that still does.
As for OP's other arguement about being hypocrites, that's a rather poor one. Hypocrisy isn't unique. Everyone is human, and no matter their religious affiliation or lack thereof, are just as susceptible to "being a dick".