There are some things that a baby is incapable of really learning and understanding. Until they fully develop an understanding of language primarily and money secondary they need not be introduced to the blockchain. I think really under the age of 5 or so Children should be left to play and learn through fun rather than being subjected to other things.
Yes, a baby don't need to learn about blockchain until it learns his mother tongue, primary language and money. Blockchain is a vast knowledge. It can be taught after completion of primary knowledge.