Why are some atheists so closed minded?

You see, most of these new age atheists are following the bandwagon of retarded hipsters who believe in the hype, just because it's something new, opposed to tradition. This whole new, "fuck the system" mentality has been taught to teenagers since the sixties with all their flower power shit. Teenagers are very impressionable, they follow trends, they create fads that last for a short while, then when they are bored of it, they invent another bullshit fad or trend to beat their chest for, in "solidarity" to their cause.
These are mostly immature teens who, in case religion would still be big, would obediently go to church every sunday because that is what the norm is. They're not atheists because they are enlightened or had given much thought to it. They are atheists because this is how it suits them better in order to accommodate to society's new standards. It's a lifestyle more than anything else.

And about what you said, about them becoming exactly how the targets of their jokes are (christians), is once again, an example of their ignorance and stupidity. If you don't honestly and genuinely believe in what you preach, you risk slipping into the other extreme, and become an immaculate reflection of your "enemy".

Cultural marxism can be partly blamed for all this stupid hypocritical, dishonest, fad building trend of embracing certain ideologies just because they oppose traditionalism.