Baby was immediately taken to a state if the art NICU and had a whole team of specialists. Still has a 0.5 chance of not having brain damage when she grows up.
This is an absolutely amazing thing. But the tweet makes it seem. Like he just st with the baby and rubbed her chest. Not that she was being treated with the best equipment and by the best people.
I can absolutely see magic not being able to correct genetic or congenital conditions. It can make sense for developmental delays aswell. But something like missing a limb from a traumatic injurie or blindness due to macular degeneration... There is no reason a mid level adventurer or powerfull character would not just use magic to heal or fix it.
Maybe an injurie by a powerful lich, or since kinda of cursed weapon that makes it impossible to fully heal with anything short of a wish spell...
Poor people on the other hand, should absolutely have debilitating injuries and disabilities that will never be fully fixed due to magic being expensive.