You think conflicting terminal values don't exist to a relevant degree because of a blog post making the point that we're mostly identical in obvious ways? (ASPD and autism would seem -- I'm not sure what you mean by relevant -- to discount conflicting terminal values not existing to a relevant degree, and then there's enculturation/learning/environment which all affect the brain. Human universals are really cultural universals. To see human universals look towards feral children. This makes your learned values claim suspicious.)