On the other hand, something that is trivially treatable can be borne without issue, which, who knows, could enable later advancement.

Just look at the established tradeoff our species makes- our children are born helpless. Isn't caring for them dysgenic? But, being able to care for & protect them enables significant brain development to happen outside the womb.

Swaddling, clearing a wrapped umbilical cord, suctioning the nose & mouth... there are lots of things we do that improve mortality that are trivial.