Revelations from Patch 5.5 (Part 1)

[Fenral]

G'raha abandoned the people in the alternate timeline and parted ways with those on the First just so he could spend time with the Warrior of Darkness and go off on an adventure.

Not the first time people have tried to hold this against G'raha, and I'm sorry, but that's just factually incorrect. An Unpromised Tomorrow

If you need in-game sources, I recommend rereading the journal entries from the Twinning, and the cutscenes from "By the Time You Hear This." They asked him. Rather, the latter implies he wasn't really left much of a choice in the matter.

(-???-)<bzzzt> ...has come to carry out our plan. This will be my last recording.
(-???-)With the tower activated and the temporal displacement apparatus online, all that remains is to throw the switch. And pray.
(-???-)I'm sorry, I truly am. I wish there was another way.
(-???-)But you are our best chance of success. Our only hope. Your gift will allow you to become one with the tower and survive the journey through time and space. Were our technology as advanced as that of the Allagans, perhaps we could've gone with you.
(-???-)Alas, it was not to be. But when you are finally reunited, all of the hardship, all of the sacrifice will've been worth it, I'm sure.
(-???-)Just promise me you'll spare a thought for those you leave behind. And we'll be thinking of you, too, for as long as this world lasts, though I fear it will not be for much longer.
(-???-)This is Biggs, third of his name, eighteenth president of Garlond Ironworks, signing off. May the Twelve be at your side, G'raha Tia. <bzzzt>

It's fine to dislike who you dislike, but don't spread misinformation to try and justify your own biases. It's not productive. We deal in facts here, with a side of educated guesswork.