It does matter and it is what so many "woke" ideologies like "critical theory", "critical race theory", "queer theory", "blank slatism" are built on.

You could argue that communism atrocity is worse, that the allies believed roughly the same thing that the axis did but their is a uniqueness to the holocaust narrative, such as it happening in a "enlightened country", it being totally mechanized, it would have killed more then the communist atrocities if they won.

The fact that the European countries who successively reaffirmed traditional mores are all linked to the worst killings in human history brings obvious reason to suppress and be distrustful of far-right ideologies.