In short, eugenics is not wrong...

This is long the position I've held as long as it is organic. Anything other than organic it becomes crimes against humanity.

And it needs to be noted that it also has a reverse context, when you artificially prop up a people who for whatever reason make bad long term choices either personally or collectively, you are practicing net negative eugenics or dysgenics. The egalitarian doesn't understand this and the master planner deliberately uses it as a weapon.