As someone who (years ago) used to sometimes get nasty and verbally aggressive when drunk occasionally - this isn't going to be an isolated incident, even if it's not every time he gets too drunk.
There's something underlying that results in angry drunk behaviour coming to the surface when inhibitions are reduced, but he may or may not ever get to the bottom of it.
In the meantime, you can't yourself be exposed to it, as you don't know where it will go, and if he cares about you and your relationship he will need to do something about it.
This means, at a minimum, if he doesn't want to stop drinking, then stop himself from getting so drunk so fast that he loses control, and if he doesn't want to do that, then make sure he does not go home until sobered up.
In time he might change he might not. In my own case, I only ever get happy drunk or sleepy drunk these days, but my life is in a better place, I'm older and probably don't drink as much as fast.
It's certainly enough reason to not want to stay with him. Why should you?