The only way this argument would make sense as a critique of Trump's supposed racism would be if you believed some races do _not_ have good genes. I doubt you believe this. I certainly don't.
However, if someone in the US started an all white club to blandly talk about how great Caucasian genetics and culture is, then I would be very suspicious of them. They wouldn't even need white robes and pointy traditionalist wizard hats (symbolizing their respect for pre-chrisitian religions I am sure)...
Do you think Trump thinks she does?
Who doesn't have good genes?
Given the association between the eugenics movement and "good genes", Trump has a large negative association to overcome if he's trying to say something so anodyne.