The issue is the effect on the child. Children born without a deep and loving bond to a living Mother are essentially damaged immediately in deep ways, emotionally, psychologically and spiritually. The trouble this is causing the world is building to unsustainable levels - even due to hospital births, let alone synthetic wombs.
Loving mothers are needed now. Men and women can mostly all (presently) have children, but they do nothing to help themselves or the planet if they do not do so in full love (which few are at present). Rights are simply what is right and it is not right to have children who are only going to experience suffering for a long time as a result of inappropriate incarnation processes.
This book is outstanding on this topic.