But this isn't selective breeding, unless you twist the definition to the point where it means something wholly different. If I understand right, this is just screening embryos for potential health problems.

If this is indeed like GATTACA selecting specific embryos after fertilization is not really selective breeding. Selective breeding is picking the parents. This is picking the children. You could do both but it didn’t seem like that is what was happening. I could still see this likely leading to problems genetically not dissimilar to problems with inbreeding. Genetic diversity requires the randomness of life to be useful long term.

Did you miss where they do that by sterilization? And qualities of a race or breed?

Do you speak English? Is this a translation error?

Edit to add-

And you present it like there's multiple definitions. There is not. This is Merriam's entry-

the practice or advocacy of controlled selective breeding of human populations (as by sterilization) to improve the populations' genetic composition

The second one is for kids. The follow on context under the actual definition also makes it very clear that this was selective breeding by sterilization, closely related to white supremacy ideology.

You specifically left out the "a science" part, which is also part of the "kids'" definition for eugenics.

eugenics noun eu·​gen·​ics yu̇-ˈjen-iks : a science that deals with the improvement of inherited qualities of a race or breed and especially of human beings

Removing the "a" from the beginning completely changes the meaning of the word, which is why you did it.

Shame.