Hey, how are you doing? I'm been less online lately given some people just "Kant" let logic interfere in their politics.
While I understand your take, note that my own atheism is also logically nihilistic, and I'm relatively 'gnostic' when I argue against specific religious claims. That is, I don't even think the functioning concept of morals exist by nature and so my own interpretation of being atheist is very non-religious. Many peer atheists and agnostics DO act 'religious' when interpreting the nature of humanity and often under the label, "Humanist", though. You cannot have a belief THAT there is any moral reality that is universal without having the significant property of religions beyond speaking about life after death.
I DO argue for moral higher grounds though and it is still something that ALL emotional beings require or they'd lack an incentive or drive to persist. My interpretation of morals though is about maximizing our means of coexisting or at least something that each of us selfishly feels personal comfort or value of with respect to how they are treated in life. We (all animals) learn to define emotional significance initially in a sort of arbitrary assignment of what we experience in windows of development. HOW you are initially treated during these periods assign what 'good' versus 'bad' are to us, including real physiological sensations, like pleasure and pain, ....where non-genetically evovled.
Laws the people create act as 'morals' and vary depending on who is in charge in creating the laws and their enforcement. As such, the moral part that contributes to a religion in us independently is only reflected socially by how much our own ideals FIT with the laws our governing bodies artificially create and whether we also FIT in favor to those laws. Government then is the human means of 'atheistically' assigning morals. When looking at the forms of religions people have, they always hold some bias reflecting their politics and based upon how well they are doing with respect to those systems.
Lately, I've found that many atheists tend to also favor religious-like beliefs based upon politics and their own fortunes or lack of it. As specific examples in our times, I find many of the supports by most (other) atheists today supporting certain extremes of beliefs, like censorship, safe spaces, strong advocacy of reversed racist or sexist idiologies, etc, very religious. Some Communist countries that are supposed to be non-religious, for instance, like North Korea, act religious by demanding their living human leaders as 'divine'. Also, one's willingness to sacrifice for some ideal future on Earth for the non-religious is at odds of still being religious because they themselves cannot be 'satisfied' when they cannot literally LIVE such Earthly paradise for themselves.
So I agree in part. But I am exception. I still think that we CAN still best optimize our social comforts through governments if we remove any traces of 'religious' justification in governments. Our own system is highly 'theocratic' in that it DOES bias it to favor religious law making. The "Multiculturalism" of our system is actually an indirect secular rhetoric used to hide that we are such. All 'cultures' being protected constitutionally are always about conserving specific ways to make laws that are themselves hiding some formal religious biases.