So many times people write what they're so sure they know without testing that knowledge. Some assumptions are just above examination, for some reason. In this case, it sounds like they wanted people to know that there was more to Noir than meets the eye, but they weren't themselves interested in finding out how much more. I'm imagining it went down something like this in the Paste staffroom:

Staffer 1: I love Noir films; they're so atmospheric.
Staffer 2: Yeah, all that [list of stereotypes about Noir that are argued against in your first quotation]
Staffer 3: But actually, they're not just those things. They also draw on Westerns.
Staffer 1: Yeah, and German expressionism.
Staffer 2: But women are always either innocent girl or bitch, amirite?
Staffer 3: Yup.
Staffer 1: Well there was this one film I saw....
Staffer3: That was an exception.
Staffer 1: Should we look around and see if there were other exceptions?
Staffers 2 and 3: Naaah. We know we're right.