Sure but again it's all gotta be evidence. I very much doubt that the evidence for such a study would be convincing to me but there's probably still some interesting data to be gleaned from it.

There's all sorts of christian studies that purport similar findings that just so happen to coincide with a traditionalist christian viewpoint, which naturally you need to be critical of the study and analyze the methods used, but if we simply throw out the study in the first place simply because it was put out by people we may disagree with we really are no better than what we claim to be against.

In the case of Iran, I would be very critical of their findings, but it's important to recognize that as they are kinda outside the western bubble and have due to their religious beliefs and a quirk of their culture accepted transition as an acceptable alternative to death for homosexuals for a long time now, they probably have a lot of useful data from an entirely different perspective than the west does.