Atheists eschew immaterial realities - for whatever exists outside of our sense perception is not real.
Money is an immaterial reality. I don't mean coins or bank notes or credit cards or account statements - these are icons, representations, but they are not "money".
Stories are immaterial. Ideas. Mathematics. Justice.
I accept immaterial realities, as do other atheists. I just don't have a god, on any plane, material or immaterial.
It is true that I am a materialist, in a basic sense, in that I am convinced that life, consciousness, immaterial realities etc. require and arise out of matter and energy, not the other way around. Panpsychism is a rather "idealist" (as opposed to "materialist") idea.
The question whether there are atheists who are not materialists is interesting. I have not met any so far.
Likewise, I also think it would be strange for an atheist to adopt certain moral values assuming nature is all there is. Just my opinion. It is Nietzsche's opinion too.
The kind of moral value which is formulated, "God says not to murder", I agree Those don't work without gods.
The kind of moral value which is based on a mutual agreement not to murder one another, what's your issue with seeing that it is just a plain good idea, obvious as daylight, and one can just adopt it without referring to a god?
If you had no god to keep you from doing so, whom would you murder first? How would you justify it to yourself? I think it was thoughts like these Nietzsche was exploring. He was, after all, the son of a priest.
On the Genealogy of Morality, which I have read in its entirety, was published in November 1887 - a few years before his insanity in 1889. His sister pretty much monopolized his writings for the last eleven years of his life from 1889 to 1900, so I know of no scholar that questions the main arguments in his masterpiece. Do you?
No, but while I have read some of his work, it was for my personal entertainment, not serious study.
When you speak of scholars not questioning his arguments, what do you mean by that?