not all laws are good. criticism should be encouraged, so we make the laws better.
They will simply ignore them. Lawmakers have to carefully consider this and they generally do it.
Not to mention the fact that we don't hold people accountable for questionable outcomes after the laws are enacted. We're essentially stabbing in the dark, expecting to have a more "accurate" stab the next time around using previous experience. Social policies, and their results are inherently grey, and we should treat the laws that surround them as such.