This turns out to be wildly inaccurate: my mother's profession -- lactation consultant -- wouldn't exist if humans had an intuition about this.

(80% of her work is in getting positioning right; this is the sort of thing that new mothers used to learn by having lots of public and family examples to follow.)

That's about the interface not knowing how to, so to speak, "configure itself"˚; it's not about the user -- the baby -- failing to use the interface.

˚With apologies for the literal objectification.

Objectification aside, that seems wrong; while there is obviously instinctive behavior involved (on both sides), both sides also need learned behavior for it to work well; the instinctive component is enough to get to the point where learning has a high enough success rate in the wood that humanity didn't die out from all out idiotic starving to death, but it's not the whole story.

That quote confuses “intuitive” with “instinctive”; “intuitive” means that it is usable by intuition, which is largely, but perhaps not entirely, learned (though much of it involves applying learned patterns outside of the context in which they were learned), not by instinct, which is inborn. Intuition might be viewed as including instinct as a non-learned component, but it is not at all identical to instinct.

“Intuitive = uses readily transferred, existing skills.” — Jef Raskin, Intuitive equals familiar, 1994

doi:10.1145/182987.584629 or https://www.asktog.com/papers/raskinintuit.html

Breastfeeding is not intuitive for mother or baby.