To me, when I watch the full clip, I could see how Joe could have been irritated at the “You work for me” line. But there are more politic ways to handle that, like “I work for everyone, but not YOU personally. C’mon man... I’m doing what’s best.” That would have been a lot better than calling him a horse’s ass and getting combative.
Joe is losing it.
Paranoia and hostility are symptoms of Alzheimers. I have had two family members that died from it, I see the symptoms. He could have a severe case of dementia, but usually they are not so combative as Alzheimer’s patients.
“Joe is losing it.”
And, Joe DOES work for the guy. His remark had the air of elitist disdain.