It is a child's perspective. In particular, the perspective of a child whose world once changed for the better, and who believes it can happen again.

[ No shift to his conversational tone or posture, but hm, Rey's capability to choose to be himself and better raises questions about whether Rau could have been more than an avatar of humanity's worst impulses at least as much as it challenges the viability of genetics as the basis for a social structure. But they are dead, so these are not questions that need to be answered. He slips the glove back on. ]

Whether foolish or not, you're correct that I cannot see it.