You're entirely missing his point; imagine all states implement the exact same system, if that'll work, then it'll work for the nation as a whole, size is irrel

You're entirely missing his point; imagine all states implement the exact same system, if that'll work, then it'll work for the nation as a whole, size is irrelevant. Yes, there are other factors at play, but he's addressing the size issue, not the other factors, so your objections are off point.