I didn't see his post as that, i see it as "Guys aren't allowed to be close and affectionate in their friendships, and I wanted to show two guys that are"
Its totally understandable that he'd want to de-confirm the whole gay thing, because thats the stigma that pops up when guys get overly affectionate with their friendship, like how girls can be. Usually though, that stigma pops up as like... a negative judgemental thing. "Ugh what are you two, gay?"
Here the fans were excited and happy, and maybe he saw it as the stigma from an affectionate friendship speaking and not a result of people thinking its cute and having fun.
He accidentally made himself Mao in the Torbaclaun episode, oops