It barely seeks to protect children, and that only as a health issue. This amoral narrowness omits moral aspects, tobacco's abulia-related link to suicide, alcoholism, promiscuity, abortion, drunk driving, drug abuse, and crime. Nineteenth century anti-tobacco writings, some by clergymen , included much more than the mere health issue, important as that is. So your effort is particularly valuable. Tobacco is a mind-altering drug.
Children are blind and deaf to the cigarette danger.
That law is unenforced, so the sin of cigarette-selling leads to more violations. Do not harm strangers, e.g., children in a store where tobacco is illegally sold. Do not follow a multitude to do evil, e.g., sell tobacco. Violation of the latter command, and buying endorsements by prominent people and lawyers, has led to the mass violation of the foregoing commands. Loving one's neighbor as oneself fulfills the law.