One other aspect that is often overlooked, is that the problem with sexism is not just with gender roles, and exclusion, it’s also with how we as a society value the gender role. You just have to look at the career fields typically chosen by men and women.
I’m not quite sure what you’re trying to say here, or how it relates to Star Wars. Are you saying that a kind of sexism is treating a typically female job like, say, secretary as lesser than a typical male job? If so, I agree. But again, I don’t see why Star Wars should have to carry over those mindsets (both that secretary is a typically female job and that secretaries are undervalued).
Unlike something like Game of Thrones, where real world sexism is brought into the story and is a big part of what it’s about, Star Wars has never been like that. I think there might be some EU stuff or whatever that says things like “the Empire is misogynist and racist,” but at least in the films anyway the galaxy has been more or less presented as one without gender prejudice. Now obviously Star Wars takes a lot of inspiration from the real world, including, of course, the injustice of oppressed people - but it’s done in a general way. I don’t see why Star Wars should have to port over Earth-based sexism, especially if it’s not a part of the story. So I go back to my point at the beginning. It’s a fantasy, so there’s no logical reason whatsoever that our world’s traditional gender roles need to followed. So why is it even a problem at all if about half of the Resistance is female?