No matter what you do, gay people are still going to fuck each other*.
The only thing that this will accomplish is to keep them from doing hot, naughty, marriage-undermining things like visit their partners in the hospital and make end-of-life decisions for them. Dirty, sweaty, leather-clad end-of-life decisions.
Tell me again how this isn't about hating gay people? Because if going out of your way to help make sure they die alone and apart from the person that they love isn't hateful, I don't know what is.
*They will also fall in love, build lives together, argue over who's turn it is to do the dishes, celebrate holidays, spend lazy evenings on the couch, get annoyed when their partner hangs the toilet paper the "wrong" way, inadvertently hurt each others' feelings, laugh over things that only they share, patiently indulge each others' taste in music, fight over pointless shit, get bored with each other, fall in love all over again, share in each others' triumphs and tragedies, go to the movies, paint the house, walk the dog, and do all the wonderful, horrible, and mundane stuff the rest of us do with the people we are lucky enough to share our lives with.