Maybe it looks like more than one person with different style is working on the game... because its actually just like you said, there are more than one artists drawing it.
"On the contrary, they don't have enough, so all CG is commissioned to different artists, that will change for Arenus."
"They work with several artists, hence the change in art style."
If you generally dont like hand drawn art then ok. I sure as hell dont get it, since hand drawn art has nearly endless possible outcomes, as opposed to 3d renders with a program where even now you see characters looking the same in games.
You do you, but judging a whole art style based on one game that actually has different artists is kinda harsh.