I probably agree in the moral sense. I was thinking more in the legal sense were you to actually try to hold someone accountable for genocide.

It would be interesting to find the moral limitations by being a steelmanning the position.

Is there some limit where the state should step in if people are having too many children? What if they dont care for their pregnancies, leading to severe biological disorders.

In the latter case, people have been tried and imprisoned in the US. I guess if people have too many children to care for, they can be imprisoned for child abuse and neglect as well.