Should children and teenagers be able to do things according to their age of maturity or their human age?

This is about stuff like, a boy at 13 is extremely mature for his age and therefore should be allowed to watch 15s. This is physical and mental maturity but hey usually come a the same time as each other.Should children and teenagers be able to do things according to their age of maturity or their human age?
Depends. Usually, I think parents are a good judge of truly how mature their child or teenager is, and they can determine what priviledges he or she should get.