(Sorry about combining posts -- am exhausted and off to bed)
LT -- I agree with ATAT. I wouldn't necessarily be triggered (although yes, it can bring up sudden, debilitating fear depending on the general tenor of my relationship with that person) but I would be very very concerned about the state of the relationship. And yes, if MC minimizes it or somehow dismisses your concern, I would be even more concerned. And like ATAT, male bonding over the wall-punching -- as weird as it may seem -- wouldn't bother me as much (it would though if it were part of a pattern of barely repressed rage but not as an isolated incident).
ATAT + Una:

and

(mother situation -- mission accomplished etc)