Exactly. All he has to do is be able to be told how to vote “correctly”. Nothing else matters. He’s a warm body, period.
He cannot interpret speech properly. Not sure if his reading is better or worse, but speech sounds like the adults from Peanuts animated cartoons.
https://www.foxnews.com/politics/fetterman-hears-voices-teachers-peanuts-after-stroke-struggles-adjust-senate-life-report