It doesn’t really matter if they are discriminated against for homosexual behavior. The law discriminates based on behavior but you are right there is no discrimination when you choose not to avail yourself of the license requirements. If you don’t don’t pass your driving test you don’t get a license. If you are blind then you can’t drive. You can’t get a license to drive your four wheeler atv on the interstate either. Men can’t take advantage of women’s shelters. The fact is many homosexuals have been legally married to members of the opposite sex and many ex homosexuals are currently married to members of the opposite sex. And you are right you can not be discriminated against concerning same sex marriage licenses when no such thing exists for anyone. Also unless you assert that gender is not a valid legal differentiator, which of course it is, the whole argument collapses. However the one thing that is absolutely NOT debatable is that the US Constitution has no requirement and has never had a requirement not in original or amended form that requires states to issue same sex marriage licenses. Its just made up bull crap. If the supreme court rules that such a thing is a right guaranteed by the constitution they might as well just set the constitution on fire and quit pretending they are following it.
+1.