If it were up to me I would rank Michigan higher on the personal freedom scale because we do pretty much as we please outside the cities anyway.
Seems to be a somewhat subjective rating system.
Having Levin and Levin Jr. as ‘representatives” seems to have a certain freedom limiting feeling.
Not only subjective, but unfairly and even wrongly weighted too heavily on some economic factors.
Remember the authors are big "L" Libertarians who have little clue about life outside their anarchist utopian dreams.