SteveJay
Head Pro
He pushed a few spike marks down that clearly knocked his putt offline and accidently let go of a club that didn't threaten anyone's life as seems to be suggested.
But once again carry on slating a young lad following his dream 
Fair enough, you go and slam your putter into your green just like he did when you play next and see what your playing partners or, more particularly, any by standing green keepers' reaction is. I suspect they will not subscribe to the "oh thats fine, he's just PUSHING down a spike mark" argument!
And when the junior playing in the group ahead of you does just the same, and leaves a dent in the green, just say how good it is to see kids following such a role model!