Maternal health nurses aren't doctors.
You'd be hard pressed to find a mother who hasn't had a negative experience with motherhood the moment they don't 'fit' the expected method of raising a child.
C-section? You didn't really give birth. Maybe next time.
Bottle feeding? You didn't really feed that child and experience that connection.
There's an enormous amount of pressure exerted on new mum's to breastfeed. It's horrendous for a mum who can't for whatever reason.
How your last sentence is relevant to breastfeeding and child birth, I have no idea.
And it's not just maternal health nurses that can cause issues, older women can be very judgy with new mothers, and very frequent with unsolicited advice. I know of a few of my mates who have had issues with their mum and their missus because of this.