Right, so the next time someone makes a joke starting with, "Hey, did you hear the one about the guy with 10-fingers?" Or the next time some demi-celebrity tweets, "@SoAndSo, That's so 10-toed." Or political figures build entire platforms on saying people with 10-fingers can't be legally married to other people with 10-fingers or adopt kids. Or a employer say, "Yeah, Mr. 10-fingers, we don't like people working here who have 10-fingers, so we're firing you." Or a landlord says, "I saw you bring that 10-fingered person into your apartment last night, so I'm evicting you." Or religious figures say things like, "Ebola is God's punishment for us allowing people with balls big as church bells to be accepted by society." When any of these things happen, you'll have a point. Until then, there's a reason homosexuals feel a need to draw attention to something that really shouldn't matter, but which very much does in this society.
So it's great that you don't care what his orientation is and you would treat him exactly like you would treat anyone else. Congratulations on being part of the solution. But then you're not the target audience so why do you even care enough to post about how much you don't care?