My observation is that the children eat the fruit they are served IF it is ripe. It is often the only thing they eat.
My mother worked when I was in school back in the late ‘50s/early ‘60s. She packed a lunch for us 3 kids every day unless there was something compelling at the cafeteria, which wasn’t very often. I had a sandwich on white bread (baloney, amer.cheese or tuna were my favs), a little snack cake or Twinkie (yum), some chips, a piece of fruit. If you did a calorie count on all of that, I am sure it was pretty high - but I wasn’t the least bit overweight. Kids got to burn off the calories with gym class, playground time, and running around the neighborhood after school. Kids don’t get nearly the exercise they used to get. That impacts health, weight, mental well-being more than anything Michelle is trying to cram down the children’s mouths.