Gabe Bankman-Fried, the younger brother of FTX's founder, tried to buy the island nation of Nauru to build a shelter to create a superhuman species in a lab.
There's nothing fundamentally wrong with eugenics. Screening for genetic diseases before birth is eugenics, selecting the best embryos for ivf is eugenics. Believing that people with severe genetic disabilities should be counseled before conceiving is eugenics as well.
The issue is the way it's done and the reason for it.