Sexuality is a major part of any persons character development. Take me for instance, I'm Trans and Pan, in the 90s as a 20+ GRaver doing drugs, doing Raves, having sex with lots of people, you could easily say my sexuality and my personality at that time were a linked commodity.
As noted above, Emet-Selch, just wouldn't have worked as a character if he wasn't played sassy and queer. Just like Elidibus wouldn't have worked if he wasn't so very hetero.
Sexuality is a major part of character development, and I'm sure they have pocket notes on character sexuality not seen by the player base, to help with character interactions, there are several very clearly gay couples in the game, but they never explicitly state this. Which is both good and bad, good because they have plausible denial if asked by China or Russia, or any Islamic country. But at the same time, they put in enough clues that we of the LGBTQ+ community can see them as apart of our family.
Honestly, the OP is probably a troll bait poster, but the request is not a political tick box for this game. You realize Final Fantasy games in general, and Final Fantasy 14 especially are very popular with the queer community, and have been so for years, as many of the main characters are very clearly "coded queer".
I wouldn't be shocked if over 30% of the player base in this game was LGBTQ+.
Oh and, "Coded Queer" is an entertainment term, basically to get past sensors in the past the Film industry hide gay characters in plain sight, but never explicitly said they were. They would get the actor to play the character gay, whether or not they knew it. ie Ben Hur. Final Fantasy has always had a lot of coded queer characters. 14 has a ton of them BTW, Cid, Nero, Emet-Selch, Alphinaud, Alisaie, Urianger, and many others. This is compounded with flat out gay couples left and right, who go over and above the typical Queer Coding, where they are clearly a gay couple even if they don't say it out loud.
This is the typical straight dismissive idea, you are fine when they force hetero couple in peoples faces, but get dismissive when people want gay ones. The MMO I used to play did this all the time, and it infuriates me they are going that path with a Queer coded main character. I stopped watching the Expanse in the second season when they had two queer coded characters have heterosexual sex, it just annoyed the hell out of me, yet straight people didn't even notice nor care that it was wrong.