It's rather an argument for a crafted system of checks and balances than a big government per se. The totalitarian governments, for example, are absolutely massive, and many don't even have some sort of politburo to reason in a dictator.
A counterargument would be that it's harder for a big government to change direction easily, once decided and set in motion. Wrong decisions can compound because it's easier for a large organization to stay its course, even in the face of increasing harm, as evident by the Vietnam war.