The only way I can respect this storyline is if someone calls him the hell out for being over the top self centered. We just stepped foot on M-A-R-S and you're over there twirling around on some "I'm gay!!! Look at meeeeee!!!" bullshyt.
He should've waited to get back to Earth then made the announcement. It would be really interesting if the writers delved into a problematic personality that would do something like that. But in today's climate, I doubt the writers portray this reveal add anything but saintly