Humans are the universe, everything humans do is natural.

Only if you assume a useless definition of natural. By your definition, everything would be natural, right? Can you give an example for something thats not natural?

Non-natural numbers?

Finally I can label that Hydrogen bomb I’ve been working on in my basement ‘organic’. Thanks!

Got carbon?

Pure, uncut Fogbank all the way baby. Look at all that C in those styrene chains! Organic all the way.

Very self centered way of looking at the world.

I personally think that reifying social norms is self-centered, but good luck ever trying to convince someone they're doing that.

Fine tuned universe theory is just cosmic narcissism