Have we reached Peak Human?

No.

Peak human is the ability to wield one's own mind and body in exceptional ways.

Peak humans have existed from time to time throughout all time. There are actually many forms. We could run around and find the most superior genetic specimen for every worthy trait, or say that every fully formed and mature human has a grain of the infinity sand in their spirit, and can transform themselves to actualize any conception they are devoted enough to see through to the end.

This is called WILL TO POWER!

Power is "the capacity for effect," for if it is not effective it is not powerful.

And will, the determination of resolve.

Such may defend free will, though I believe you shall find these in bondage to their devotion.

Look for them and extol any greatness in their passing for compared to these ordinary man is a waste of his humanity.