The root isnt that these kids dont realize their menhahel disapproves! The root is much much much deeper, probably touching things like messed up chinuch, hashkafos skewed in their mind, lack of loving teaching ingraining these values in them, etc.
You’re forgetting that there’s a yetzer hora involved. Many of these kids are not missing a loving home or proper values, they just need some discipline to keep them from doing something wrong.