You should ask anyone of those people supporting this guy whether, in an emergency situation, they would prefer to receive blood from a man who had had sex with another man or from a heterosexual. Interesting to see what the answers would be.
No it would not. I would wager that 9 out of 10 of them would tell you that they didn't care, that either was fine with them.
Of those 9, half would be lying and the other half would be so stupid that they really would not care.