No, it’s because Hitler pretty much conquered Europe. None of the other people managed to do that.
Napoleon was from a time when monarchies were still the mainstream. Hitler is post 1848 revolutions and series of reforms that gradually changed perceptions and general education of the populace.
Though Napoleon’s wars caused a large amount of destruction and received appropriate criticism, it was still considered pretty much the norm at that time of imperial dominance.
Hitler on the other hand acted when democracy and civil rights were heading towards full growth. The people’s thoughts and general knowledge were very different from Napoleon’s era.
As a side note, France before and during Napoleon lost most of its foreign colonies. So his wars in large majority had European victims. Yet that wasn’t enough to make him taboo, which means having European victims isn’t the main issue that caused Hitler to be taboo.
Nonsense. Hitler is taboo in EU and US because of the atrocities he committed towards Europeans. Not because they “conquered democratic Europeans”. Americans have done and are doing the same and more towards latin america, asia and middle east without anything close to that condemnation. It’s not about the conquest, it’s about westerners being OK with imperialist atrocity as long as it’s done against the “other”.