Not bizarre at all. Did you see the play in question? Nurkic leaned his shoulder out and caught Shump under the chin. It should have been called an offensive foul and if they had reviewed, possibly even flagrant. It was certainly un-necessary contact.
If I was Iman, I'd be upset too. There's no place for that. Nurkic's attitude after the fact shows that he's just being a punk.
Exhibit A of being a punk. No accountability or sorry after. Instead, just a passive aggressive comment. He's a douche. I hope Iman pays him back in spades.
The best part of that comment IMO is that Iman is only 4 years older. I guess Nurkic thinks he's close to retirement soon himself.