I'm not for banning the dunk. But there certainly is a bit of the "look at me" to it. I don't particularly notice players thumping their own chests or mugging for the camera after making a lay up.
What makes the Hamilton to Brimah type play fun to watch is as much the overall execution. What is really amazing to watch is the unexpected dunk, usually by a forward or guard who suddenly explode to the rim in traffic, like Purvis's incredible move last year, against whom I don't remember but I think it was #1 on Sports Centers top 10.