This sort of thing is more in the mind of the religious extremist. It's like an extreme charactachure of an atheist. I'm sure you'll find some few unhinged people like this. But well, this is really just projection, since this is typically the extremist example to finding "unholy" books movies etc. Here the juxtaposition of the bible in place of something extremist christians hate with a clearly immoral atheist stereotype is supposed to be funny because it is essentially a roll swap. The extremists won't realize it's projection since it feeds their persecution complex well.

I can rememeber similar experiences with family as a child. Though replace the bible with harry Potter, or the Koran.

As ice always said if you are confident your position and ideals are correct. You have no need to suppress countering ideals. Since you don't need to worry about them being more convincing than your position. I think a lot of stupid people just can't understand why things cults say are wrong so they fear them. They understand that they easily trap stupid people like them but they can't manage to make a good argument against them. So they resort to insults and direct hostility.

Cultists will respond similarly when you confront them with your reasons for not joining their cult. JW are among the worst they love trying to bring their kids along for the cute family angle but you can watch them begin to find excuses to leave when you stay out of the religious side and simply argue with their practical issues, namely the insidious way in which they socially isolate their members to prevent them from leaving. And how the pyramidal structure of their organization is specifically designed to keep them stupid and reliant on the cult for their entire social life so they can be exploited for money. They have a ready made answer for that accusation but you can see the kids don't buy it. Not really. That's why they'll demonize the so called "apostates" they fear them. They don't really think their message is stupid and foolish. If they did they'd not be afraid to hear it.