Trying not to power level here, but I have left-side nerve damage not too different from that in stroke victims (quoth my physician) and what you described in those videos looks like me trying to do shit left-handed, so I 100% guarantee the stroke has fucked up his nerves more than just on the one side it's paralyzed. He probably has subtle subconscious tremors, and he's almost certainly not aware of them because he's too self-aggrandizing to analyze why he's rattling out of control all the time. Tammy etc probably don't bring it up out of "politeness" either. It's really easy not to notice that shit. Most people don't even notice their normal hand tremors, so Deluded Mr. Greer O'Riley here 1000% doesn't know he's wobbling like a pitcher of ice tea on the deck of a storm-battered ship.