there's an implied (if tongue-in-cheek) pro-eugenics message, since the premise is rooted in dysgenics being a real problem

How you go from "smart people should reproduce more" to "cull the population of the unfavorable" is on you, but thats certainly not the conclusion I would draw.

eugenics != "cull the population of the unfavorable"

eugenics includes positions like "unfavorable should reproduce less than the favorable"