Thanks for posting that, I'm a male who has had the imposter feeling sometimes. However, I eventually realized 2 things:

(a) Learning in any area means learning, among other things, how much there is to know. This makes one feel humble (at best) - yet in reality one's own knowledge is probably way above average by the time you get to this perspective.

(b) Some people who appear competent (and in some cases think themselves competent) really aren't. Don't assume too much in either direction!