Believe it or not, not everybody is the same. And there certainly could be more that we don't know about. To judge him without knowing the situation is pretty petty, in my opinion.
If you want to get into the speculation, his parents are very good parents who are involved in his basketball heavily (there was a story about his mom being at the gym late with him over summer I believe). His mom continues to post positive things about Purdue Basketball on her social media. I don't think there's any "ill will" towards Purdue involved.
Also, the other day Chris Forman (Purdue's sports info guy) tweeted this to his mom: "
@stephens3x21 You too, Kay. Thinking of Kendall and you guys as well."
I don't think he'd be saying that if the death of his friend was not a significant factor.