By that argument, the lower rate of reproduction is western countries is eugenics, since it’s a consequence of policy (education).
Actually one of the best things that poor folks can do to escape generational poverty, is to have fewer kids. That way, kids inherit a larger share of their grandparents assets, and more can be passed down. Generational land ownership, for example, is extremely powerful. Fewer children per family also lowers the financial burden of education, enabling better education for comparatively fewer people. That’s not eugenics, it’s smart family planning.