Homophobia is an inherent aspect of Islam and all Abrahamic religions; it is not just an ISIS thing. So, it is present across islamic societies which means even the average Middle Eastern who may be right now suffering at the hands of ISIS can be a victimizer against an LGB. In other words, except from things going in private and not labeling them, on a public level no one announces their non-heterosexual orientation.
It obviously looks photoshopped.