Treat others as you’d like to be treated - you might have heard about this before, “the golden rule”, independently reached by basically every religion on every continent in human history.

This is the tenet of modern secularism philosophy, you absolute ham sandwich. The first primitive religion was most likely "obey chief spirit totem, listen to shaman". We didn't invent this equality doctrine until very recently. Most old religions explicitly told people to convert or kill heathens.

Don't make up bullshit to try to support your argument.

Creation, the natural world, the universe itself, with various degrees of anthropomorphization, just like today

And they were all different. That's the key point. There are a thousand sky and rain gods, but a triangle has three points across the globe. The gods are made up to try to explain the world, and the triangle is a mathematical reference marker independently discovered by every culture that discovered mathematics. Notice that triangles are the same except for the name in every country, but the gods vary in every way.

Are you really this dumb? By your logic nothing in human society exists - we invented capitalism, if it died out today it would never come back exactly the same, does “capitalism” not exist?

You are in no position to call anyone dumb, sir. But to tackle your last point, again a fundamental misunderstanding of reality. Capitalism is the NAME we have given to the method of exchange where we have arbitrarily defined certain objects to be empowered with worth, and we trade labor or goods for those objects in order to overcome the limitation of traditional barter, which requires the coincidence of wants before trade can happen.

If our entire culture were to magically vanish overnight, others would still rediscover the concept of money and how useful it is as a medium of trade. They would not independently rediscover jesus and the cross or buddha and the lotus flower, or izanagi and the border of yomi, or anything else. Again, because money and trade has a basis in reality, and religion doesn't.