I suppose it's better than waving it a lap too early, no doubt the incompetent will simply be given more training.
Can't remember the last time somebody breached the rule on mechanics leaving the grid but I think it was a drive-through wasn't it?
I'm inclined to call that a racing incident, if anything it's Hamilton's mistake, should have stayed on the outside, would have then had the inside line for the next corner and no risk of contact like that.