Nobody has a voluntary choice in their birth and eugenics doesn't have to breed people for a certain position or job. It may be something as simple as egg/sperm analysis that calculates a favorable (in whatever way the technology designers determine that) gene sequence and then the child would be raised normally. Eugenics doesn't mean the decay of the moral fabric of society or the loss of basic ethics in research. Why is it so hard to imagine eugenics integrating into modern society?
It's not surprising at all. Eugenics on a large scale is also know as population control and it elicits negative visceral reactions for good reasons. Large undertakings usually require some kind of central control and the history of such control is not positive at all.
Now if the choice comes down to something between two individuals because technology makes it possible to make certain choices that's a different matter but even then you are treading in dangerous territory. Who gets access to the technology? How do you verify that the technology is safe? Is there a beta test period? Who gets to be a beta tester? Anyway the list is long and the technology is nowhere near where it needs to be for even these kinds of choices to be made between two individuals let alone at the population level.
I find the idea in general just intuitively unappealing. Humanity can't breed itself out of the problems it is in. Being smart is simply not enough. Anything worthwhile requires hard work. So are you going to breed for hard work as well now? I don't see these scientists looking for those genes though.
This fear is really surprising to me.