The whole thing is pointless. Too many people have a deep vested interest in explaining how he wasn’t. The marxists, and democrat party left of all sorts is forced to pretend that nazis were different. If they are no different, that says they are just as evil.
Then some other deluded dead end souls out there who despise communism swallow the lie that nazism was a staunch anti-communist effort that just went too far. But they know they oppose communism, so it becomes too difficult to despise the main opponent of the USSR.
Both positions flip the finger to our founding fathers. They saw complete government control on one end of the scale, anarchy on the other. They wanted a republic as close to the anarchy scale as possible without endangering the rights of the individual. Through those lenses, the difference between a nazi and a communist is academic at best. Both socialist, both at the total government control of the scale. Both utterly despised the individual. Both were/are death cults.
Socialism at its root is and always must be about the collective. Collective "injustice" in all of its forms. In opposition to a "safety net" for individuals, socialism looks for "groups" of victims and groups of villains. Socialism is at its heart a system that dismisses rights of the one for the gain of the many. Once those the in-group deems vermin, cockroaches, greedy, privileged or problems — anything is justifiable to provide "social justice" to the collective.
In western society, traditional western liberalism stand against the collective mob and as a protector of the individual. Once one understands why socialism is defined as a "stepping stone," you will begin to understand why the story usually ends in mass graves of enemies or starvation. Create a collective at the expense of the individual and it becomes a playground for those who seek power and riches at any cost, justifying every evil they commit in the name of the collective they are supposedly defending.