It's easy to judge. These are naive and innocent kids (some barely 15) that rely on grown ups in society for guidance, so they can't really be labeled stupid.
By age 15 you should be able to put two & two together when scores of kids from your area die each year during these initiations. You should know that the potential for you to be mutilated or killed is pretty real.
I won't even go into their parents & other adults involved here.
I reckon they are stupid.