I'd like to meet a (human) baby anywhere that is self-reliant. Perhaps we have those who can self-soothe to sleep, but that besides, feeding, clothing, mobility, even diaper changing is completely dependent on parents or others. Where does this idea of a self-reliant baby come from, if no baby to begin with is any more self-reliant than another?
The flaw in this supposition, that babies should become increasingly self-reliant through evolution, is that babies do not reproduce. Human adults reproduce, and by that point (hopefully) have grown entirely out of their infant habits and abilities. If babies were a species, rather than the juvenile state of man, then perhaps we would see babies that are self-reliant through evolution. However, since babies are the juvenile state of man, and have parents/other society members to care for human children (generally, discounting the neglected children of the world), there is no evolutionary push for infants to become self-reliant.
Following the idea of this thread, would you suppose that animals living in symbiosis is an argument against evolution?