What does the optimization make time for? What is the goal? Maximum accumulation of resources? Health? Happiness? If I save ten minutes by meal prepping, do I have to optimize _those_ ten minutes?
I figured if you were as crazy as OP about "optimizing" then sitting doing nothing would surely be anathema.
Similar to doing nothing being valuable, sometimes doing something "optimally", just isn't worth it -- how do you enjoy cooking a meal you've never cooked before of You're trying to hyper optimally meal prep for the week?