The problem is that people have an idea of Hitler that did not truly exist; in regard to verified history, he never conducted a large scale holocaust, he actually had a few people around him who classify as "Jevvs" (they were not Yehubor of course) and this creates cognitive dissonance to people between actual history and their perceptions, but it's historical reality.
The issue is after the 50's and 60's the hoax that he did a large scale genocide was perpetuated; after this Christians who hated Hebrews adopted this as a means to hate Hebrews and said "He did right"; but he never conducted any large scale genocide as these people would like it to be.
The feud between Christians and Hebrews dates back to thousands of years, as both systems are influenced highly by Yehubor, so it's normal they want to go as far as Armaggedon and total genocides.
He was actually very high spiritually and this is exactly why he was not like these people try to make him out to be; He never used slave labor as the Hebrews claim and any Hebrews that perished in WW2 were among other casualties of the time. The numbers and later claims were exaggerated, but Christians in order to justify extremism and historical hate against Hebrews, accepted the poisoned version and tried to promote him as part of the poisoned version, not reality, as antithesis to the already exaggerated claims of Hebrews.