If the full force of the coercive state via morality laws is needed for "important educational" purposes to teach morality, then churches, mosques, and synagogues are abject failures at teaching morality.
I learned that incest was wrong and to avoid that type of behavior long before I knew it was illegal.
No law prohibiting murder is necessary for me not to kill a fellow citizen, unless in self-defense.
The point is, moral people do not need moral laws to act morally.
But moral people need moral laws in order to prosecute immoral people who act immorally.