We have hierarchy, always have. Even chimpanzees have a social hierarchy.

Every human society has had a hierarchy of some sort. What changes is the distribution of resources. Historically as societies become more complex social stratification increases and resources become less evenly distributed. Defining complex society is a bit well complex but I can go into the anthropological paradigms currently being used in the field if you want.

Unfortunately you have taken a conversation focused on an anthropological/archaeological break down of human society's relation to organized religion and tried to match it to your political philosophy. I regret to inform you it does not.

Now that being said what was does not necessitate what must be. I think we have to ask ourselves why as a species every time we developed a complex society we included stratification, religion, and an uneven distribution of resources if we ever want to move past those things. Is the answer truly as simple as "we just hadn't invented better systems of government yet"? Or is there something about our inherent being that causes us to repeat this pattern independently across multiple unrelated societies?

I don't have the answers to these, no one does. And they are the subject of much academic debate.

Now moving into the realm of personal opinion. I do agree that we have progressed and can form a much better form of governance. I do however believe that religion was an important factor in the creation of ancient socities and to the eventual progression to us. I do agree though that religion has caused a lot of harm and is not necessary for modern society. But in the times past where we were just beginning to write and raise crops there is an undeniable repeating pattern of religion and its relation to societal structure.

So to sum it up politically and as it applies to modern times I'm with you. But as an archaeologist I have to disagree with your interpretation of the past.

Maybe it was, maybe it wasn't, that's not my point. My point is that the statement "religious fucks have held us back for millennia" is nonsensical because before the last three hundred years or so everyone was a "religious fuck."

Activities that are harmful to yourself and your surroundings are a form of not functioning.
Being poor and voting Trump is a form of self harm.
Disowning family and friends for being LGBT is a form of not functioning.
Believing prosperity gospel and donating to a church is a form of self harm, and failure to address problems properly.
Believing death is not that important because there's a way better afterlife is outright insane, and a huge potential cause for self harm.
Except seeing how religious people who claim to believe that, are whining when they are about to die, proves they don't really believe it.
It is very obvious that a belief system based on delusions is harmful when followed. The "Thoughts and prayers" idea is an obvious example, it allows people to do nothing about a problem with a good conscience.
And as we can see in American society, the delusional mindset is absolutely extremely harmful to American society.

The cog wheel may be turning, but it is broken so it does damage to itself and the cogwheels it is connected to with every turn it takes.

The only reason strongly religious people may appear to be functioning, is that for some reason that form of insanity is accepted by the majority, and because of that, so are the harmful effects of it.