By the same argument you could also argue that certain genetic traits are part of the "quality control system". E.g. Before the modern era having a gene that ma

By the same argument you could also argue that certain genetic traits are part of the "quality control system". E.g. Before the modern era having a gene that makes you disabled would lower your chance of reproduction. This is an extremely dangerous path to set out on. We have already completely changed human evolution, and I would argue with great success. Do we really want to start undoing this?