Before epilepsy was understood to be a neurological condition, people believed it was caused by the moon, or by phlegm in the brain. They condemned seizures as evidence of witchcraft or demonic possession, and killed or castrated sufferers to prevent them from passing tainted blood to a new generation.
He’s selling us a future that looks like Psycho-Pass. I imagine he has a great understanding of behavior given his long studies, but even if it were true, the “more just society” he mentions is what eventually devolves into the Psycho-Pass Sybil System. Where we treat or punish those who are “destined” by biology to commit criminal acts before they even think about committing them. It’s super interesting to consider, but I think operating through law under this notion is a slippery path.