I never drink alcohol. But I have noticed that alcohol tends to transform people into loud cackling drunks. I despise loud and I despise cackling. I'm okay with drunks, as long as they're not loud and they don't cackle. Do we have any credible witnesses who will verify that the OP was neither loud nor cackling? AFAICT from the story, the pilot's verbalizations ranged from "muttering" to "loud muttering". I'm not aware of any law against muttering. Nor am I aware of any law against loud cackling. If I actually had the choice, I'd prefer loud muttering to loud cackling. Either way, it comes with the territory of frequent flying. I think people need to be more tolerant of others.