Eugenics is generally carried out not through selective breeding, but by removing the populations you do not want to breed. Same thing in 20th century America where the main effort was simply on removing elements from society that "we" didn't want breeding - which has the same effect while reducing the constraints on liberty, which would not be well received otherwise.
See, for instance, the famous quote from Supreme Court Justice Oliver Wendell Holmes Jr. that, "Three generations of imbeciles are enough." Interestingly enough, the ruling from that court case (Buck v Bell) was never formally overturned. It's simply that eugenics fell out of fashion, following it being taken to extremes by a certain vegetarian artist in Germany with a knack for rhetoric.
People have this weird thing where, if something comes about as an emergent property of a market system, then it’s fine, but otherwise a much more carefully organized result is not fine. Like if corporations raced towards an AI apocalypse then there’s no one to blame but if a central planner did it, then that would be an evil plan that should be stopped. Same with non biodegradeable plastic, destruction of ecosystems, loss of biodiversity, and so on. (By contrast to all these, fossil fuels are a slowpoke.)
For example — we don’t particularly need to do anything to reduce birth rates of technologically advanced societies societies with human rights. That’s because women choose to study and work on their career in their 20s, while men try hard to save up to afford the sky-high real estate prices. The market does the eugenics for everyone.
If anything, the fear that uneducated populations or those in low-cost-of-living countries are going to “replace us” is a result of that simple fact. Comparing continents, Africa is expected to continue to have a ton of kids per woman compared to, say, Europe or USA.
Religion, of course plays a role. When the condoms are off, the religion doesn’t matter — you’re going to have a lot of babies. The only difference is, how early do you get married? Religions tend to frown on premarital sex.
> we don’t particularly need to do anything to reduce birth rates of technologically advanced societies societies with human rights.
Other than the hard work put in to scaring would-be parents. Indeed, the birth control pill put people in control, but it it is only since the "16 and Pregnant" movement, which campaigned on demonizing having children and stressed the importance of not being saddled by a child, that we've seen below replacement levels.
As a result, the youth of today in their prime rearing years look negatively upon having children, and by the time they "snap out of it" they are into their geriatric child birthing years and biologically don't have much time left, putting tight constraint on how many children can be birthed.
> That’s because women choose to study and work on their career in their 20s
Trouble is that, thanks to the same campaigning, those who choose to have children in their 20s (or earlier) have to face the scorn of society. Unless you are strong-willed, you have little choice but to study and work on your career, even if children is what you truly want, because everyone else is going to try and make your life miserable if you don't.
> Comparing continents, Africa is expected to continue to have a ton of kids per woman compared to, say, Europe or USA.
Fertility is most strongly correlated with child mortality IIRC. The more likely your kid is to die young, the more likely you are to have lots of kids. Very low child mortality in developed nations, so very low fertility.
Isn't there a MASSIVE difference between "you are not allowed to breed because we don't want you and think you're inferior" vs "you did a course and have worked hard and have clearly demonstrated your commitment to rearing a child carefully and thoughtfully, here is some state-sponsored fund to help you "
Drawing an equivalence between these two is like saying a school system that punishes mistakes with physical abuse as a matter of policy to make a smarter population is identical, morally speaking to society at large, as a school system that just rewards good and hard work as a matter of policy to make a smarter population.
It makes no sense. I can't believe anyone could actually believe rewarding parents who have demonstrated a commitment to rearing a child well is identical to enforcing undesirables not have children.
What you described is not eugenics though.