looks like some people find the costume wearing-style all wrong..https://ladailymirror.com/2020/06/20/perry-mason-and-the-case-of-the-flawed-fedora/
The critic seems to think there was sartorial homogenization in the 1930s and ‘40s. Humans, and in particular those pesky Americans, have always had a strong individualists tendency. Yes, there was more conformity then than now, but to claim “no one” wore their hats that way??