There's a clear line between stopping reproduction and intentionally inducing disabilities.

I'm going to put it another way. Does this really pass your own personal sanity check? That parents should be allowed to:

- Amputate their children's limbs (Various developmental defects

- Remove their children's eyes (Blindness)

- Perforate their children's eardrums (Deafness)

- Remove their tongue / vocal chords (Mutes)

- Paralyze their kids (Various forms of musculoskeletal issues)

- Inflict brain damage on their kids (various forms of intellectual disabilities)