They aren't even new. Go back a hundred years and Nazis were spouting the same bullshit about impending genetic and population decline. Given modern technology

They aren't even new. Go back a hundred years and Nazis were spouting the same bullshit about impending genetic and population decline. Given modern technology such as IVF with embryo selection based on genetic sequencing, the concerns that genetic decline is unstoppable are unfounded. The biggest problem is that the people interested in these things are mostly tactless and stupid. The lesswrong crowd really loves building polygenic scores for IQ. They don't realize that overzealous genetic selection has similar problems as nuclear power plants. A single accident can ruin genetics research for everyone. The goal should be giving birth to healthy children, not creating superhumans.