Soyweiser has likely accurately identified that you’re JAQing in bad faith, but on the slim off chance you actually want to educate yourself, the rationalwiki page on Biological Determinism and Eugenics is a decent place to start to see the standard flaws and fallacies used to argue for pro-eugenic positions. Rationalwiki has a scathing and sarcastic tone, but that tone is well deserved in this case.

To provide a brief summary, in general, the pro-eugenicists misunderstand correlation and causation, misunderstand the direction of causation, overestimate what little correlation there actually is, fail to understand environmental factors (especially systemic inequalities that might require leftist solutions to actually have any chance at fixing), and refuse to acknowledge the context of genetics research (i.e. all the Neo-Nazis and alt righters that will jump on anything they can get).

The lesswrongers and SSCs sometimes whine they don’t get fair consideration, but considering they take Charles Murray the slightest bit seriously they can keep whining.