There's a big difference between "theft isn't a concern" and "theft is the main reason things are lost". A place where you're more likely to get your things stolen than you are to misplace them is definitely a place with above-average crime rates.

And while I don't know where you've been and what your tolerance level for "worrying about" theft is, I've never worried about theft anywhere but very touristy places in huge cities.

Theft is a concern where I live in Brooklyn but its an order of magnitude less likely that I lose something to theft vs me misplacing it