I think it is pretty clear that the young man has a problem. Here he is in December using the same slur in an interview (at 4:57 of the linked video):
Note that this interview took place very shortly after he had a heated match with American's Josh Terao. It would be a real shame if Thomas Gilman ended up being the U.S. representative at 57kg on the 2020 Olympic team, given that the Games take place in Tokyo. What an embarrassment it would be to send someone that has repeatedly and publicly used that particular slur to represent our country in Japan.
What's more is that Gilman claims to be a history buff (see here:
http://www.hawkcentral.com/story/sp...tom-brands-terry-brands-ncaa-bigten/98343516/ ). In particular, this article notes the following:
"An avid reader and war history buff, he’s recently dove into Korean War topics through a box his late grandfather left him."
It stands to reason that a history buff such as Mr. Gilman knows EXACTLY the weight that the word he chooses to use carries, yet he continues to use it, notably immediately after having a heated match with Josh Terao (
http://www.aueagles.com/sports/m-wrestl/2016-17/bios/terao_josh_v1ld?view=bio ).
Edit: To those that are using the defense that "maybe he didn't know it was offensive": a) It's 2017, he should have figured it out by now and b) he knows enough that in the above video he qualified his statement by saying that he "doesn't know if it's politically correct to say." So he absolutely knows that the word carries some weight.