Complex and ugly things can have funny unsuspected angles sometimes. Narcissistic parents that I know (including my mother) have said those words too, sure your words are true, but the funny thing is narcissistic are absolutely convinced they did the perfect thing and might lecture others into putting great effort... so some day... will be like "me", because the premise on those words is they were ready, it was difficult but they succeeded.Potential parents: Don't have kids until you are ready in all aspects. That should mean not having kids at all for some in this world. (And that's okay, we don't need more population.)
That's one of the ugliest (to me) parts of dealing with narcissistic people, how they can be convinced of holding the truth, doing the right thing and if not careful, they can drop those words on people not old enough to deal with such contradictions (and lies).