I think there is value in acknowledging that the holocaust wasn't an isolated event but has centuries of context. Multiple times the only thing saving us from a holocaust-like event was that we didn't have the technical means and infrastructure to do it.
That doesn't make the holocaust less bad, if anything it means we have to be even more vigilant to make sure it doesn't happen again
I think that the Holocaust can't be compared to any event in history because the cold blooded mass murder of innocent civilians, including women and children is unprecedented. It's my opinion of course. I tend to get uneasy when people compare the Holocaust with other events because more often than not they have political motives and using the Holocaust as a comparison only serves to attack the compared idea/group of people. This is very unfair to the victims of the Holocaust. I repeat, it's just my opinion
That doesn't make the holocaust less bad, if anything it means we have to be even more vigilant to make sure it doesn't happen again