.... For what it's worth, I strongly believe in nurture over nature and I think that ascribing a supernatural level of evil to Hitler is unhelpful if not actively counter-productive but I would say that I'd find the idea of an unambiguously good and heroic Hitler to be a bit distasteful, even if the writer went to great lengths to show how different their path had been from OTL. This is not the Hitler of OTL but I don't think he should be unrecognisable as a character in AH either. This is partially why the first line of the TL is the lament that 'the civilised human spirit, whether one calls it bourgeois or merely leaves it at civilised, cannot get rid of a feeling of the uncanny.'
Have you seen the climax of the late Soviet Belarussian film
Run Come See? (That's how my Soviet studies professor translated this late 1980s production anyway)?
I personally have little desire to "save Hitler" even in the abstract, though it certainly would be a major winning goal to anyone trying to write a story of human redemption, as Niven and Pournelle sought to redeem
in their mid-1970s SF/Fantasy novel
Inferno. The reality on the ground in the real world we live in is that there are too many people out there seeking to exonerate him without acknowledging any requirement he undergo any sort of penance whatsoever, let alone the epic scale of it we would reasonably suppose would in Niven and Pournelle's work put him right into Satan's mouth along with Judas and the others Dante put there. Man has some serious explaining to do, to say the least...any attempt to put him into any sort of ambiguous, let alone favorable, light sends the wrong signal to a whole lot of unsavory yet relevant people in the world. So I think you've found a reasonable balance, given that we want to tell this story without giving a bunch of Nazis any sort of green light.
So it is that a lot of people's assumptions they seem to be carrying over from OTL turn out to be fairly well justified in the text.
For what it is worth though, while I agree that Hitler's racist bigotry is one pillar of the unforgivableness and monstrosity of the Third Reich of OTL, there was another one that logically is independent of it, though correlation is not entirely accidental in the real world...authoritarianism. Here too I would think a Marxist tradition is less hopeless for perhaps detangling the mind on this point, but even less than racism is it likely to guarantee such a result. I was writing a whole different reply on this subject, on the paradox of the Enlightenment mentality between the virtues of the free contention of rival ideas and thoughts, versus the tendency to go all Whiggish jumping to the definitive answers at the back of the book, claiming the moral authority to cut through the fog of debate to lay down the settled resolution and move on from the din of the free market of ideas. To indeed declare, in the name of enlightenment and truth itself, that argument and ambiguity are inherently bad in themselves, and to situate oneself, by the amazing good fortune of historic destiny, at the very cusp of all authority and demand, in the name of sweet reason and common sense order, the abject obedience of others.
Even an ATL Hitler I can imagine somehow completely purged of all racism whatsoever seems pretty likely to cling to this aspect of personality, and to find the most academically enthusiastic absorption of the most erudite and lucid forms of Marxist philosophy to do darn little to challenge him on this point. In my view, the Marxist tradition is much more firmly and legitimately ensconced in the basic Enlightenment mentality of Modern Europe than most of its ideological rivals, particularly the far right forms developed in the early 20th century largely in specific rejection of Enlightenment itself. A deep value in the Marxist mentality is the notion of dispassionate and sincere debate, the dialectic itself being as it were incarnated in such forms of thought. But in practical life, many a Marxist has let true and fair criticism go by the board in the service of morale in the Cause proving to seem a more important overall value, at least in the heat of the struggle--and what Marxist Politburo ever comes to power without going through such an existential narrow passage, when the demands of Party solidarity impose the seductive logic of "Democratic Centralism?"
"Dear Comrades, we never rely on anything but the most tested logic, but rest assured minds more flexible and enlightened than you can aspire to, at least in the short time we have while under fire in the current crisis, have already turned this issue over and over, we have considered everything, so for the sake of the victory of the working class cease all your questions and take this definitive ruling we hand down to you for reliable truth, and let us move on to more pressing concerns. A true child of the Proletariat understands our conclusions instinctively--if you keep showing doubt and confusion we must conclude you are of questionable class allegiance and need to be purged for the sake of our necessary victory!"
It has a very different tone in many ways than a screed from Mein Kampf of OTL, but in its basic conclusion-follow your leader, he knows better than you do--the effect is exactly the same.
And it is clear that in this TL, Hitler will always uphold the wisdom arrived at by Democratic Centralism, as long as he himself is among the sages to vet each gem of logic so canonized. This is what democracy means to Hitler--superior wisdom through the
properly honed collective.