Didn't see it as a big deal. Jaylen shouldn't dog it back on defense while he pouts or complains about a call or no call. Just shouldn't do it, but young players do what they see being done by players across the league, old and young, on his team or not, complain to the refs and dog it getting back on defense after a missed call or bad shot.
My guess is Jaylen and every youngster on the team has seen Morris, Kyrie, Smart and other vets on this complain to refs while taking their time to get back on defense or dogged getting back after a miss. So maybe Morris getting vocal in front of the crowd wasn't looked at as veteran love given Jaylen has seen Morris dog it a lot...... and he definitely does.
Overall, it's no big deal. Brown definitely needs to not take his time getting back on defense and Morris probably needs to be less vociferous with the youngsters when he tells them to not do things he does a lot.