I would argue that we still see some slight improvements and progress over the generations. Of course the difference could be much bigger but every time I bring up that we should implement tests and a license to have kids I'm call a crazy person...
Pre-test and license makes sense but would turn out awful, because the biggest shitheads out there would just co-opt the process. Unfortunately, the best option is just not perpetuating the species on an individual level.
I remember being like 15 and thinking it was absolutely ludicrous anyone could just have children. It came up in the context of people my age having a baby and some of the things my mom dealt with as a social worker. It took a lot longer to really understand why it needs to be that way.
some places have some level of test, or anyways interview or vetting, before becoming a childcare worker, or befire adoption. that could be seen as somethkng similar to described.
of course,multiple jurisdictions also make even accessing contraception, far more difficut that it should be, with all sorts of tests ands barriers in the way. I guess that's the opposite of, in one sense, of whats proposed perhaps.
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And, yeah, don't do eugenics, . do, however, make contraception and scientificallya accurate sex ed, freely and widely avalable.