I do not get the impression, from the previous post nor this one, that Sam is unaware of the distinction between the impact of/consequences of/hurt caused by one controversial stance 50 years ago ("gay people should have rights") and the opposite one today ("gay people shouldn't have rights").
If this distinction is something he understands (which, personally, I believe he does but hey, I could be wrong), could it be that it's not him missing the point?