@Parapraxis,
There is no real logic to bullying, and behavior and norms don't follow formal logic, you may have never done any of the things i stated or had any of them happen to you, You may have lived in a bubble with no outside influence whatsoever
The actual right of passage for the most part are arbitrary. There is really no should involved in the picture. Some cultures traditionally had beastiality norms as passage from child to teen, others have very ritualized rights of passage like jumping off platforms with vines around your ankles or High School Graduation. Should is not an issue, the issue is that there must be (and by must I mean that every society has them) some symbolic marker of passage from one state of maturity to another.
Take the high school graduation for example, is there really a need for diplomas and the resultant employment restrictions imposed on those who do not posess them? Why "should" this be the case? There are people that achieve "success" without them, but for the most part people don't.
Ask me why there are such things as rights of passage I would propose that they are symbolic rituals that have a psychological impact on the assumed positive identity of an individual that allows him/her to see themselves, and allows others to see them, as a member of the group capable of productive involvement and or betterment of the group within the groups' internalized definitions of betterment of the group.