Does anyone think all the characters were written similarly?

I just finished watching it for the second time since its initial airing, and I was struck by how many of the characters seemed to lack distinct personalities. Instead, they all felt like variations of Hannah/Lena Dunham. I was surprised when Shosh went to Japan, and even the Japanese characters seemed to exhibit the same traits. The same issue arose with the photographer woman in the wheelchair. Regardless of the race/gender/age, almost every character came across like a hipster white woman who thinks they’re smarter and deeper than everyone else. Did anyone else notice this?