I don't think teenagers being racist is a normal activity that is whimsical fun. There are actual consequences to people. Do you think the black 12 to 16 year old with an interest in technology continues that interest when the chat bot starts yelling racial slurs at him and telling him his life his worthless. It's very easy for people who have never experienced racism to say he should just brush it off. "It was just a joke bro" is also one of the favorite tools of neo nazis and other groups to gauge interest from other people while being able to claim they aren't actually racist.
The story is also about a former grad student so he is well into adult hood but probably started off as one of those teenagers just "trolling".
The story is also about a former grad student so he is well into adult hood but probably started off as one of those teenagers just "trolling".