ATRL is doing the absolute most on this guy. Like even during his speech, he said that his source was Ian McKellen and that he wasn't sure if that was the truth. It's not like he bragged about being the first openly gay man to win the award. He clearly said I might be wrong and nevertheless it was still a big achievement for the LGBT community.
And I don't see how this is a problem, he was basically uninformed and joked about it a little bit. I seriously don't see what the harm is in this.