And also the conflating of eugenics and fixing birth defects is completely off base

It’s not off base and what you’re describing is called liberal eugenics, or new eugenics.

[…] some critics, such as UC Berkeley sociologist Troy Duster, have argued that modern genetics is a “back door to eugenics”.

I’m sure the laws set in place after the eugenics wars would be strict enough to not leave such wiggle room.