I believe there is a qualitative difference between the governing systems in a country that tries to regulate personal appearances, and one that would shift it's military to the other side of the planet, bombing and murdering Iranian school children and civilians en-masse for no particular reason.

I also believe that your claim of seven "official allowed" haircuts is bs, as with almost everything I ever read about Iran.

Source: I see that Tehrani men have the same variety of haircuts and facial hair styles as in any other city on the planet.