14U A-ball and above EVERY batter should be able to lay down a sacrifice bunt, and a sacrifice bunt is a MUST HAVE skill set when playing an ITB.
I'd like to see this explored and researched. I'm not disagreeing w/ you. But not enough information. A closer look might show the time-honored tradition of automatic bunt here is not that smart.
Note Buckeye's NCAA stats that show that a runner at 2nd w/ 0 outs yields more runs per inning (1.49) than runner at 3rd w/ 1 out (1.17). However, you might be a little less likely to score 1 run. In other words, no bunt means you're more likely to get 2, but also more likely to get 0. The bunt is safer to get 1.
My gut tells me that the bunt should be used in the ITB only when you feel that runs are hard to come by. I'd say it's overused at 14U and below.