He introduces it like this is going to be some major issue. The his main examples are Koening's (correct) interpretation of "parameters" and his misreading of the diary comment.

In my opinion, Hae and Adnan's culture are not greatly important to the story. There is no need for Koening to go into great detail about Pakistani and Korean culture. This is a murder mystery. And they do a good job of incorporating the appropriate amount cultural backdrop to drive the story along.

I do think there was a racial component to the outcome of Adnan's case and I hope they touch on that later.