Hitler, nevertheless was an atheist. Maybe he didn't claim to be bound to the formal logic of other "atheists", maybe it meant nothing to him to be either a believer or a non-believer in the Irrelevant. God had no place in his thinking. Yes, he didn't find it useful to carry a label, or to take a side in something he absolutely found irrelevant. Hitler did read Nietzsche, whose primary thrust was that great men might rightly hold themselves above the fray of all such notions as God and Morals. If you have the power, you make the rules. People who don't have the power are at your disposal, for whatever purpose you may have.
The current crowd of UN governance pushers might include some dedicated believers in the non-existence of God like yourself, who may have values and ethics above and beyond the case in many other folks. . . . . but those who do control it have the same philosophy as Hitler. It is the right of the elite to do what "must" be done, whatever it may be. They don't feel it necessary to address the issue of "God" any more than Hitler did, but they have the same disdain for anyone who does, whether a lowly christian or an educated professing "atheist".
It's called the arrogance of power for a reason. One of the things people with unlimited power have found to be a universally useful tool, is the exercise of raw, unreasoned and unprincipled power. "Because I say so" is the the mantra of tyranny across the ages. Having the will to just kill any opponent or anyone at all for no reason at all, is the demonstration a tyrant needs to make to prove his point. Once people realize he has the power to do senseless things with impunity, they will "conform" to whatever is asked, without question or quibble.
That's why I support the essential concept of limited government answerable to the governed.
. Same with gods. They are creations by humans at the end of the day.