Well, I think there's an appropriate time for everything
If he's a 15 year old kid, who doesn't appear to be vicious or violent, I give Rather credit for extending the open hand of compassion. Rather's probably astute enough to recognize that this is just a mixed-up teenager.
If he were instead a 22 year old "hardened" criminal with a record of violent crimes, it may indeed be more appropriate for the clenched fist response. Rather may even agree with that. I do give him credit for being able to tell the difference.