Subdurals don't have to be all that hard of a trauma when you're that old.
Yes the trauma has to be harder and faster in younger healthy people, but not so much in older frail people. Even basic every day life can result in a subdural or an epidural when you're that old.
Your bones are weak, your body is possibly fat. Your vascular and cardiac and respiratory systems are all a step or two or three behind. Your weaknesses are all exacerbated and your falls are all magnified. A simple fall-from-standing could do this to an old enough person and there doesn't have to be anything odd or abnormal about it.
I am not agreeing or disagreeing with you. I am not defending or accusing Ailes as a man. I am not judging Fox News itself. I am only saying that an overweight old man could very easily just have a plain and simple and basic fall in his own house and suffer a subdural hematoma.