You make a pretty good argument against a priori restrictions in general. E.g. who knows how amazing our cities would be today if urban development hadn't been

You make a pretty good argument against a priori restrictions in general. E.g. who knows how amazing our cities would be today if urban development hadn't been forced into a static, prescriptive zoning paradigm for the past 70 years? Too many people think about freedom in terms of individuals' rights in isolation, but its important to recognize that freedom alone encourages the kind of broad variation from which real, substantive improvement emerges, and is the true driver of human progress. It's extremely important to make this point in any and every context in which it's relevant.