By "a higher level" do you mean Plato was right in the same sense that "communism is a perfectly good economic/political system, it's just that real communism has never really been tried"?

Or do you mean that Plato was possessed of a higher intelligence than puny mortals like us could hope to properly contemplate, possibly even incapable of error, and therefore we should defer to his musings without using our critical thinking to apply the benefit of 2,360 years of hindsight?