Today I learned that having wheel flop is considered "better" by some people.
I'm currently, at this very moment, six months into a one year vacation cycling around the world. I've also in the past bicycled across Europe and Asia twice. Racks, panniers, bar bags, frame bags, saddlebags, baskets, trailers, if it exists under the sun, I've tried it. I ride a custom touring bike made to my body measurements by a framebuilder.
I know how heavy loads work on bicycles. Do you?