No,"we" don't, and in every generation we must learn it, anew. What Hitler did "right" will turn out to be bureaucratic and policy achievements ubiquitous across functioning Westphalian governments of the era, but the kinds of rhetoric which they'd be packaged for are exclusively fascist apología, not earnest statebuilding, nor personal or business strategy—which is to say they have no practical purpose and could be better learned by studying literally every other Westphalian government or, frankly, and other government throughout history.
The knowledge has no practical purpose, and the public cannot be trusted to handle it appropriately. It should remain the purview of scholars who have proven their fealty to the rational interpretation of history.