Most of the Leftโs arguments against eugenics seems to amount to, โEugenics is bad because Hitler did eugenics, therefor eugenics is bad.โ
Thatโs not a very good argument, needless to say, since Hitler also did things like breathe and listen to the radio.
A more sophisticated โ though still not very good โ argument is that some slightly better people also did eugenics, and that was also evil.
Strangely, the left is firmly in support of eugenics (which is just altering the genome in some way), when it comes to treatments that might benefit them โ such as Alzheimerโs prevention, cancer treatments, etc.
So that tells me there is no real logic or justification there, not truly. โEugenicsโ is just another word like โradiationโ and โvaccinationโ that scares a lot of people.