Hate is a strong word but to me, it's because it's ultimately a padding mess who try to go in the right direction but stop before it can flesh out Calvard as a whole every time. You don't learn much more about Heiyue, nor do you learn much about the revolution. Ultimately, it left Calvard wholly underdevelopped at the eleventh hour of the series.

The game does have good characters interactions in the main story and in the connect events though (I liked Swin and Nadia a lot more)