[TBP]

even white conservatives often see birth reduction in positive terms

None that I know of. What "conservatives" have you been talking to?

[Riverman94610]

I grew up around mostly conservatives and lets be honest here-many DID speak favorably about forced sterilization,abortion and their fear that “they”-meaning blacks and Mexicans”breed like rabbits”and that this was not good for the white race.
Liberals also were guilty of similiar sentiments to be sure but don’t hold your head in the sand and pretend conservatives often did not hold these views.
They did in my circle.This was in the Fifties and Sixties.Hopefully,we have matured somewhat since then.