That doesn’t disprove him at all: if the average one lasts 200 years and not all last exactly 200, then some will necessarily last more than 200. This is a mathematical consequence of what an average means.

what better way to celebrate the democracy by combining it with a celebration of the birthday of the Great Leader, with a soviet style military parade and an admonition that any protest will be met with the harshest of consequences.

I know that math makes it harder to come up with political zingers but if there are two civilizations; one lasted 150 years and the other lasted 250 years the average is 200.

It'd be hilarious if it was a fiction, some bitter comedic cautionary satire

If that's what you call a democracy, sure... I don't think most people will agree with you though.