First it suggests wealth = iq… maybe thats what you mean? Not sure what you mean but my following points are related to this

Second it also means produced viable offspring with healthy people, which really means wealthy people *nutted in healthy people. There is an extremely high correlation to wealth and which sex is choosing based on “health” (as opposed to equal or greater wealth)

Third, they probably nutted in unhealthy people too. Just might as well acknowledge the human flexibility in reproductive activity.

Fourth, it suggests the healthy person needed the wealth to maintain the healthy lifestyle or spread it to the wealthy person or subsequent offspring, here I have the most doubts

But if I misunderstood what you were getting at, let me know. Married may be less crass but its probably inaccurate