You’re getting downvoted, but a win is a win, and reduced birthrate/fertility is a huge and clear win on the planetary scale. Fewer people = less waste/pollution = smaller ecological impact = less competition over finite resources. If we find policies that reduce birthrates, we should always implement them.

This policy only reduces the birthrates of wealthy people who follow laws, so it's self-defeating, in that the future generations of poor people who don't care about laws also won't care about reducing their ecological impact.