Young referees are not as much of the problem as are parents and coaches that drive our young referees out of the game. My son (13) and I ref'ed a "President's U11" game last week. He didn't want to AR the "parents" side because ... parents. Can't blame him. Its not as much the parents getting on him as he just doesn't want to hear the abject stupidity of uneducated parents that have no idea what a "handling" foul is or why he didn't raise his flag for a player being in a legitimate offside position that makes no play on the ball or the fact that a kid falls down while challenging for a ball doesn't mean there was a foul.
What you will find with almost all of these "young" referees is they are club players that know the game better than 99% of the parents on the sideline. I'm proud to call them my colleagues. They actually practice and play the game and understand its a contact sport. They know that there is a spectrum of based on the skill of the players. Shoulder charges, pushing between equally sized kids, a little hip check gets called at the Rec level ... but not President's cup.
But there is a something you and all parents that complain about the "young referees" can do:
http://www.calsouth.com/en/referees/how-to-be/
That said, most young referees do suffer from a flaw ... they take too much crap from parents and coaches and don't shut it down quick enough.
Finally, I respectfully disagree with this comment: "...grown adults who curse out teenagers for making bad calls should be ashamed of themselves." These morons should not only be ashamed of themselves ... they should be prohibited from being a spectator in any youth sport activities. There simply is no place at the amateur sports level for any person to verbally abuse another person for making a judgment call.