[jamesrcole]

I think that interpretation is absolutely correct, because the quote in question is "There is nothing shameful about marrying a man or woman..." which says nothing about the gender of the person marrying that man or woman. It goes on to say "...while holding each other's calloused hands at the alter", which, in the context, is easily assumed to be a man and a woman, but which isn't actually, as it's referring to the hypothetical person and the man or woman they are marrying.