My parents both do hospice work, and I've been around people with senile dementia. There's all sorts of horror and ugliness inside of people, conscious, unconscious, collectively unconscious, etcetera. You best believe someone can be a fount of garbage which are totally opposite to the values they truly hold. That's what the unconscious is.
People who loved you, raised you, even, end up not recognizing you, calling you dirty names, disowning you completely, even. Do you judge you your loved ones like that? And do you think you cannot be broken thusly?
Some guy with a brain tumor downloaded child p*rn because the brain tumor impeded the part of his brain which hold our rational control in check. He had no interest in child p*rn up until this point. When he had the tumor removed, the strange impulse disappeared?
I've known brain-injured people who are like children, they were in auto accidents, and when they came to, they were more like jealous siblings to their own children.
You can get hit on the head and turn into a slobbering, reactive, cursing beast. So I don't doubt what a little booze can do.