I could be misremembering but I thought the character who was non-enhanced was born that way on purpose due to the choice of the mother. Gets a lot more ethically dicey when you start talking about forcing people to genetically engineer their children or face them being forced into a underclass.

You're correct. I think the other point is that regardless of the path we choose, there will be a period where not everyone will be genetically engineered due to availability (older people who were born before it was invented, people born to poor or conservative families)