The more correct statement is: "You might need to fret even if inscrutable things were shaped by human decisions, because outcomes frequently end up unrelated or totally contrary to the human intent behind those decisions even in total absence of malice or even mistakes."
I specifically mention bugs and glitches, unintended consequences, happy accidents (unintended things that become intended by virtue of them being kept rather than discarded), unequal weight given to decisions, and more. Of course I don't use your exact wording, but it's all there. I try to keep it neutral, rather positive vs negative outcomes, just "decisions".
I am a glass half full kind of guy so perhaps the text is a little more positive than neutral.