"Just a regular guy" etc. There's nothing wrong with being just anything.
You need to stop treating everyone in the world like a member of your scrum team or something. Understanding people's "skills and interests"? They're just people for crying out loud, speak to them. And no, there's nothing wrong with being "just a person". Stop being so analytical and desperate to have everything conform to your fantasies of what the world should be like.
"Just a regular guy" is still assumed to have distinct personality, interests, hobbies and skills. "Just a mom" is not. That is not the statement on what actual moms are like, but what people imagine when they hear the phrase.
Like in the original comment this started with "girls just want to be mothers" is contrasted with being a person who has any out of parenting interests at all.
And for all the talk about "noble", no interests at all leaves you with nothing to think about, nothing to talk about, nothing to do, nothing to be happy about when children are not present. Nothing to be proud about once the kids are not toddlers anymore and their achievements are their own.
And parent "living exclusively through childrens achievements" is object of criticism. That situation is not good for children, because they end up being pushed into parents dreams. It is unfair to children to expect them to be your source of proudness or whatever.
You need to stop treating everyone in the world like a member of your scrum team or something. Understanding people's "skills and interests"? They're just people for crying out loud, speak to them. And no, there's nothing wrong with being "just a person". Stop being so analytical and desperate to have everything conform to your fantasies of what the world should be like.