We have age limits for smoking, drinking, driving, etc. and don’t expect only parents to be involved in that protection.

Uh, if a parent gives their kids smokes, booze or car keys before they are of age it is 100% on the parent.

Parenting is the act of instilling values and teaching the ability to reason out whether a behaviour or decision is appropriate. That includes whether or not to drive a car without a license, whether or not to drink when underage and whether or not it is appropriate to tell your teacher to get back in the kitchen.