I think the intent of Mike Judge's joke was less so an outright promotion of eugenics and more so mocking the upper crust of American society's approach to family planning. (That of which Judge was intimately familiar with during his time in SV when he worked for a graphics card company.)

A lot of his work with KotH analyzed the same dynamics of educated and uneducated America and the interplay and I think Idiocracy is essentially the terminus of the observations he would make where if the idiots got their way. (A semi-common plot point with Hank in KotH where he would be pit against rediculous circumstances.)