It's not individual sexism, but it _is_ systematic sexism.
Women generally don't handle negotiating the same as men. But negotiation skills aren't relevant to most jobs. So if that's a factor in how people get paid, it's _systematically_ sexist.
Women generally don't handle negotiating the same as men. But negotiation skills aren't relevant to most jobs. So if that's a factor in how people get paid, it's _systematically_ sexist.
Because sexism or no, I think it's a tremendous problem when people get ahead for completely tangential reasons to their job performance and skills.
Unless your point is that the sexism is at a larger cultural level that fosters the average woman to be less effective at salary negotiations. In that case I completely agree.