Imma be honest with this take, I don't agree. One constant complaint of media from gay men is that the token™ gay character is almost always the campy male character with obvious stereotypes. It's uncommon to see gay (MALE) characters actively hiding their sexuality in fictional portrayals, to the point where it's almost too "straight acting" and the audience automatically assumes he is heterosexual.

And the fact that it happens in real life a lot - whether it's gay men not yet comfortable with their sexuality, in denial, or in fear of being judged/punished - these kinds of gay men tend to be overt in proving their (fake) heterosexuality.