Maybe the key difference is that natural complexity asks for adaptation, while human-made complexity often asks for submission

You mean like this?

A: If you eat this plant before boiling it, it kills you. By boiling it first, I've submitted to natural complexity.

B: If you touch this wire without turning off the power, it kills you. By turning it off first, I've adapted to artificial complexity.

You're just picking between two near-synonyms based on how one sounds scarier.

Ding ding ding we have a winner. Salivate!