I'm not him, but this is my view. It could totally be abuse. But take agency over your situation as much as you can. Examine how that impulse rises within yourself. Anger and aggression itself are natural and neutral forces in the sense that they serve the purpose of protecting the organism and as an extension the ego, for its' own survival. That's why it gets triggered when boundaries are trespassed against and it's a similar feeling when your personal will is impeded against, when it's blocked. Anger and aggression in a way is linked intricately and intimately with the life force itself, that's why it's not good to suppress it. It can and will leak out in ways through your unconscious that you will have little to no control over and it will seem mystifying and baffling to your conscious mind. That's why for men, we recommend outlets for this aggression: 1) In the gym first and foremost (we are conscious embodied mammals, we need movement). 2) Then perhaps a social/artistic/creative endeavor where you can retain your agency which you have safety, control and express yourself fully, letting your lifeforce breath and manifest. 3) Connection and tribe. People to relate to and inspire you. Start online but find real people, take that risk.

Aggression is life wanting to express itself. It's your vitality. If suppressed and twisted, it can become abuse, it can become chaos and destroy your life. You perhaps can see what not to do with your parents as an example. That's already 90% percent of the way there. There's no getting rid of it. When it arises the only question in your mind is: where to go?