I, as I am sure many other fans of this character, loved the little date in Living Memory with G'raha Tia. It was a much-needed reprieve, and the conversation he has with us on the gondola is quite possibly my favorite moment in the entirety of Dawntrail, and easily up there as one of my favorite moments in the entire game. It feels like a script Ishikawa herself may have written, as he suddenly expresses depth and acknowledges his deep-seated feelings on wanting to spend one more day with someone he lost. He doesn't say it outright, but I believe he is referring to the WoL, specifically from the doomed timeline. He also wonders what he would have done if he was presented with something like Living Memory to bring us back to life. It's, in my opinion, a fantastic exploration of his morals and his dedication to the WoL.
Canal town was also described to be for romance and pleasure. Given the buildup to this conversation is, quite literally, finding a wedding ring for a couple reunited in death, and him being told to live life with no regrets... G'raha's word choice is rich with subtext and the romantic tones are nearly impossible to miss in the scene (if you aren't tone deaf). Many of my friends thought he was about to confess to the WoL. I am now convinced that they put him and our WoL on a boat specifically to tease at a literal ship.
However, I also feel sympathy for players who do not care for him at all, and were likely annoyed with the section entirely on the grounds that they do not see G'raha as a romantic interest. I imagine the frustration for players who instead pair their WoL with other popular fan favorites. I understand entirely the reason why the story will never make a specific pairing canon. Deciding a single love interest will divide the fans and rocking the boat (heh) will discourage players from coming back to the story. People are already swearing off of subbing from the game because of Dawntrail not satisfying their expectations. Introducing a canon love interest would sunder the playerbase.
However, I personally love this dynamic. I'm a big sucker for romance in media, and I'm a dirty rotten shameless WoLGraha shipper. I am happy this scene exists, though I concede that the ship teasing needs to be dialed back and out of MSQ if they wish to respect the players' interests.
If I could suggest a potential avenue to have the best of both worlds, for the shippers and for people who do not care for romance, I would suggest Square Enix consider an optional quest series for the players who want to develop a romance with a specific NPC. Obviously certain restrictions should be in place, such as story progress, but like job quests, these can easily be added to per expansion. Not everyone's favorite would be an option, but so it goes for a game with thousands of NPCs.