That's a bit of a leap.
The order and organisation of the human body is beyond every technology we have ever developed to date.
We discover what appears to be disorder in a healthy, non-aberrant system and make leaps to justify its disorder. Using the same philosophy that brought in the "junk dna" theory, we then settle the on acceptance of it being a mishmash of cobbled together mutations. But then as the years go on we find another level of order in that "chaos" and we're humbled again.
>but isn't it wondrous that from this emerges a complexity that can say "I" and has consciousness of self?
You're right, it is wonderous, and if we assumed order first, I suspect we'd look harder for it and find it faster than assuming chaos so early every time.