My basic idea here is that the newborn baby crawling about is already a lot more analogous to an AI well in the way of going FOOM than a bunch of scattered clever pattern recognition algorithms and symbol representation models that just need the overall software architecture design to tie them together

I'll credit that. A baby is a machine for going FOOM.

(Specifically, I'd guess, because so much has to be left out to produce a size of offspring that can be born without killing the mother too often. Hence the appalling, but really quite typical of evolution, hack of having the human memepool be essential to the organism expressed by the genes growing right.)