2) Atheism is antithetical to morality, and indeed the only way true morality can exist is with an omniscient God. This is an indisputable fact. Cf. postmodernism.
That's an unusual stance. How does it work?
That's an old chestnut. The idea is between objective and subjective morality. So it goes, if you get to make up your own morality, you can justify all kind of things.
It's one of the things Nietzsche banged on about.
https://en.wikipedia.org/wiki/God_is_dead
That is a tremendously reductionist (and hotly debated) view of Nietzsche. Nietzche's perspective on "God id Dead" is often argued as an affirmation of morality and ethics and a rejection of nihilism of 'atheism' - because notion of 'atheism' itself is post-modern. I.E. "Atheism" as it was "banged about" back then - even today in many circles - is self-referential *typically* to the Abrahamic traditions. But only in modernity have people tried to include "all religion" (obviously) under its umbrella. But at that point it becomes an unnecessary term.
One isn't a-Voodoo, or a-alchemy, for instance.
The notion of the Ubermench which follows the conceits of "God is Dead" is the acknowledgement that ethics and morality in their highest form ultimately comes from the individual's capacity to understand and ACT upon them. This can be misinterpreted by those that don't understand the deeper ramifications of this idea as "Everyone makes their own morality" - which is clearly ridiculous, but it also is what most people think it means. That is how the idea was misused by the Nazi's and pretty much everyone that has ever justified bad ideas with Nietzsche
My view has always been: People are eternally ignorant, fearful and stupid. They're *DOOMED* to their egoic pretentious (and fallacious) beliefs about the world and repeat the worst aspects of their beliefs until it causes catastrophe. They *live* in the Platonic Cave much like the metaphor of the Cave describes. The Ubermensch is the individual that turns away from the shadows on the wall, and must wrestle with the higher truth they "realize" (but was always there - Absolute Morality/Ethics) - but they themselves are only human and limited in their own capacity to apprehend what they encounter, but they go back to the cave to woo others out. Some go, but the remainders stay, and kill the Ubermensch, because he is a threat to their tiny ignorant bubble.
Those that go out - will eventually rise in their own conception of reality. Make a better place - that one day *will* become a new "Cave" albeit a more comfortable one. Which will calcify and degrade because we lose sight of what is important (that pesky higher Morality and Ethics thing). And we create shadows to watch on walls (or our phones and screens) until someone walks out of that cave... to "rediscover" the higher truth. (Which never left... it was always there, but since we've receded again, it has to be re-learned).
Incremental material (and less conscious) progress until we either go extinct or we get over the worse aspects of our collective issues (which seems unlikely unless we go full cyborg - or everyone starts pounding psychedelics). Meanwhile we'll allow ourselves to be consumed by superstitions, shadows representing truth, and that serpent in the garden, named Ego. They'll all take different forms, but they'll do the same damage as they always have in civilizations of the past. Only bigger and better (which means worse).