Testing for genetic defects is very different from the Gattaca-premise of most everything about a person being genetically deterministic, with society ordered around that notion. My point was that such a setting is likely inherently impossible, since “heritability” doesn’t work like that; the most techbros can do is LARP at it, which, granted, can be very dangerous on its own – the fact that race is a social construct doesn’t preclude racism and so on. But there’s no need to get frightened by science fiction when science facts tell a different story.