I have yet to see any proof of him being gay. If you read a little further ahead, I was open to the idea of him being bi, after a pic was posted, but then it seemed he was only baiting, so yeah. That post you quoted was just speculation.
However, in 32 years on this earth, I have yet to see a gay guy that I can't tell is gay, no matter how masculine. I believe there is a genetic component to it that not only affects certain behavioral patterns that can't be hidden if you know what to look for, but also affects physical appearance to a very small degree. Something around the mouth area that I can't quite put my finger on, but that I notice in a very large portion of gay men. I think this needs to be researched.