I think there's a lack of honesty in the YA genre, and fiction as a whole when it comes to LGBT characters, and their portrayal. There is a lot of inclusion for inclusion's sake, which is nice in a Star Trek sort of way, but there still aren't a lot of LGBT lead characters written by LGBT authors. There's a clearly staked out corner for LGBT characters and stories, but there haven't been, and likely won't be, a blockbuster series with a LGBT lead.
Would the Hunger Games, Divergent, Maze Runner have been international hits if the leads were a gay boy in a love triangle with two there guys? Probably not. If we're honest they'd be modest selling series with a small fan base, at most. If we're honest, there's a box you can put GLBT characters into if you want to have best seller success, and it's nice to be included, but as a trend, I home we've run our course as best friends, sidekicks and secondary characters.
Rant:::: AND REALLY THE MAZE RUNNER? NO GAY CHARACTERS IN THE MAZE RUNNER? If there ever was a concept that screamed for a gay love triangle it was a place with no adults, no girls, no memories of any kind which would conceivably would include any sort of stigma towards same sex coupling, and a bunch of guys in their late teens. Like seriously? Something that implausible doesn't even have two guys who shacked up together? Seriously? Seriously? Although I'm sure there's a bunch of Alby/Thomas/Newt slash fiction somewhere on the web. ::::: Rant.
I agree with all this, MD. You're right on the money.
And as for THE MAZE RUNNER... James Dashner is Mormon. You're right, it would have fit right in, but I don't think there was any way the author was going to include it.