While there seems to be a large group of people that strongly dislikes Nobuo Uematsu's tracks
I don't know about FFXIV specifically, but I wouldn't say that this is generally true. I think Uematsu was a bad choice for scoring an entire MMO because I think an MMO requires a greater quantity of music than one person can reasonably produce without an enormous sacrifice in quality. Had he arranged music composed by a team, I think he could unified an excellent score for the game.
But I think most of us loved Uematsu's work in general, particularly over the early years of the FF series.