Lol, I just had a fun-stupid thought. Rainbow = God supporting the LGBT rights, tell it to your local priest.
Anyway, people in this topic should chill the f out.
There's no queer baiting going on, there's no herero baiting going on.
There is general relationship baiting going on, end of the story.
FFXIV pretty much only hints at relationships in the MSQ, nothing is ever confirmed. Gender and orientation don't matter, there's a healthy mix of hinting in all directions.
This is a brilliant approach, leaving stuff to the individual to interpret, leaving it all to the person's imagination. As a bonus the MSQ is not polluted by lengthy romance quests which I bet would annoy a big portion of the players base.
We are here to kill dragons and evil gods, not watch two NPC's kiss. Find yourself nice waifu or husbando in the game and kiss all you want wearing chocobo outfits if that's your thing!