strictfather why do you think parents do not want their children to have an orgasm and prefer to prevent it by using a chastity belt or other ways?
It's not just about orgasms.
A young teenager shouldn't be allowed to drink alcohol, but it's not because she would feel drunk, it's because it's wrong to drink alcohol at such age, even if it's not enough to get drunk. Feeling drunk isn't the problem, drinking alcohol is. It's ok to let her have a very small sip if she's curious what it tastes like, but nothing more than that until she's older.
It's the same with orgasms. Orgasms aren't the problem, touching that area is. It's ok to let her wash herself there while taking a shower, otherwise it should be kept inaccessible until older.