Coach K definitely didn't like it and apparently told Brooks after the game.
"He just told me that I’m too good of a player to be showing off at the end," Brooks said. "And you know, he’s right. I gotta respect Duke. I’ve gotta respect them. And you’ve gotta learn from these things. He’s one of the greatest coaches."
Coach K denied it when asked about it by reporters, then said "You can say whatever you want. Dillon Brooks is a hell of a player. I said, 'You're a terrific player.' And you can take whatever he said and then go with it, all right?"
Plenty of people chalked it up to the Dukies being sore losers.