Freodin thinks the Holocaust was good for Germany. He gave his reasons. So this destroys your statement that "we all unanimously agree that the holocaust was a moral travesty."
I think it's pretty clear Freodin agrees the holocaust was an immoral act. His post was written as a thought experiment, not as an advocation of the holocaust.
I should add, by saying unanimous, I was referring to the posters on this thread, not everyone in the world. However, getting to your point, I fully agree there are some who think the holocaust was a good thing. We can show why their views are morally flawed however using reason and evidence.
I'm not going to write out a full paper to explain in detail, however the basics are that even proponents of the holocaust would value life as a good thing. Through bigotry they have been lead to believe that there are "lower forms" of life, which we can demonstrate they have no evidence for. That exposes a flaw in their views, which is in direct contradiction to their moral principles regarding the value of life.
Of course there's far more reasoning why we can show the opinions of the Nazis were misguided, which many former Nazis accepted after the war, but for the sake of not writing a 30 page article, I'll stop here.
Secondly, even if every gentile on the earth all unanimously agreed that the holocaust was good for Germany, that does not make the holocaust good.
And how could someone living in such a society know the difference?
For example, for all we know rape could be objectively good, however the vast majority of our society disagrees... How could we get to learning what is actually objectively correct in that situation?
Since I have already demonstrated why statements like this are false, I will ignore it for the sake of expediency.
Seeing as you agreed to this line of thought in previous posts, I find your statement here quite strange...
Conflating epistemology and ontology does not allow for this argument to be true, and definitely not persuasive.
I have already addressed this concern twice... You have not demonstrated there is anything ontological at all in this topic. It's mere assertion. Until you can demonstrate it, epistemology is all we have to go on.
Once again this is a strawman. I never said we all agreed the holocaust was bad.
That's not the point... You are arguing because people overwhelmingly believe the holocaust was bad, that somehow there is something objective about that belief. It's a total non sequitur.
Also, the question I asked Mark still has not been answered by you:
I didn't know I was obligated to answer questions you asked to mark... But I'll be happy to answer
Is it not obvious that it is a moral fact that sending people into gas chambers by the train car load, men women and children, and then burning their bodies to the extent that their ashes fall like snow from the heavens, and all because they were not blonde haired and blue eyed, is wrong? And wrong even if the Nazis thought it was good?
This truth is self evident as the truth that your face has a nose.
The above simply requires a yes or no from you. The way you answer will determine whether or not you are a moral realist or anti-realist.
I agree that the action you described above is wrong.
But again, that means nothing when it comes to demonstrating objectivity. All we have demonstrated is that you and I, and the vast majority of people agree that it's wrong. How do you tie that to an external source?