Poor comparison. Let's not forget that it's legal for people with hereditary diseases to procreate, would you compare that with "poisoning the water supply"?
Furthermore, here are some legal ways to crudely "engineer" the DNA of your future offspring:
- smoking
- drinking
- legal prescription drugs
- exposing yourself to ionizing radiation
That counts for both males and females, of course with pregnant females the effects are vastly amplified.