The younger males ones don't want the grunt work. The Witchtower Bable and Trick Society doesn't come out and say that so they want elders to pull, push, and shove the young males to force them to become ministerial servants and then after their slavehood to become an elder. It is the same principle to shame the youth to get baptized, so later on, they will have second thoughts about leaving the witnesses when their brains start to think.
Sour Grapes