Best of lists can be fun. The best coffee cities, for example, or the best cities for a staycation. They can also be horribly, horribly off track like this “study” from SimpleTexting that ranks the best college football towns to tailgate in.
Any type of ranking is going to be subjective. Even for rankings that add in quantitative aspects, the subjectivity comes in when whoever is doing the ranking chooses which quantitative aspects matter.