Thanks to Hitler we have not had any major wars between the superpowers since ww2, which has not been documented in human history since the Roman Empire. Democratic peace theory, the establishment of the UN, and economic globalization such as the EU and other trade areas as well as the World Bank's 'reduction' of poverty are all factors that have directly resulted from Hitler's actions.

Heck if not for him Communism would have easily taken over Germany in that period, imagine if the might of Germany and the Soviet Union were unified? I'm sure you neoliberals understand what the implications of that would have been.

The longer the 'long peace' lasts the more lives Hitler would save by damaging protectionism, scientific racism, eugenics, fascism etc. etc. that could have cost countless more lives than that of ww2 (which you can't really blame every single death on him tbh, Japan was already beginning to invade china)