Post-workout carbs for weightlifting are very much a thing when you're doing a cut, competition prep or changing gears to a higher-volume routine. It's not uncommon for strength athletes to hit a couple of gummy bears or Pixi Stix after a workout, either. Higher glycemic index foods (even small amounts of candy or other sugary snacks) are good for replenishing the glycogen necessary for proper maintenance and growth of skeletal muscle.
Junior isn't anywhere near a strength athlete, so none of this would really be necessary for him.