People in that part of the world are simply crazy. I'm talking genetically linked psychosis. I don't think it's necessarily that Islam makes its adherents into lunatics, it's that Islam is exactly the sort of religion that people who were already lunatics would create.
I've never put much stock in the argument that "homophobia" is a front for deep, latent homosexuality, but with these cretins it's a classic case. The entire history in that area of the world is official condemnation of homos, yet indulgence in it at every opportunity. I wonder if at any point during his "training" Jihadi Butt Boy ever wondered "couldn't this be done with, like, a mechanical instrument of some kind?". It's sort of LOL-worthy.