I actually think it's reasonable to accept terms as they are if their definition has a long history. If eugenics means a system of forced sterilization intended to unfairly prevent certain people from having kids, (and it has for over half a century) that's fine. I can come up with another term to refer to practices such as embryo screening and we can all agree that eugenics was a very bad thing and would be bad if we tried to bring it back in the future. What I object to is then using a very loaded term outside of that original context to smear people that are making very hard choices, like parents trying to conceive a healthy child