And now a little bit of information about the artist himself: he refers to himself as freelancer artist here https://www.artstation.com/ikostya.
Yes, looks like Larian hired him to do some work. But what made you think that he would be ever involved in direct processing of players feedback, when his task is to draw pictures?
Because it would be nice if they knew what people around think about their work and art direction. If the subject is brought up in a friendly manner.
I agree with the position of Uncle Lester and KillerRabbit, and posted here before almost the same words; it sat in my head, so I found whoever could be reached and asked questions.
As can be seen from the link you've provided, this artist did believable, realistic-looking clothing and armor and he understands what they are doing now instead. So it's the matter of art direction.