Why decentralize power back to the states? What is it about the states that make them the right level to delegate power to?
A large point of what I took from the article is that states are simultaneously too large (because they encompass metro areas and rural areas that often have little in common, both in terms of economic and social outlook) and too small (because they encourage race to the bottom competition between states who in many ways have common interests).
When you devolve power to a lower body, you are doing a form of central planning because you're determining what those lower bodies should be. So we should do it right. That might mean that states aren't the only body to consider.
>> They are the result of ... the political processes we already had in place
You can't assign this causality with certainty. They may have also arisen despite the political processes we have in place.