Keg,
You don't think you would have gotten that experience when in the CM2 seat? The only reason the Second Officer position is around is to save bean counters money.
Everyone has a bias as to what is the right way depending on how they progressed. Can you think of a better way to train someone than when they are young and keen? Put em in a seat and teach them the ropes.
If sitting and watching is required YouTube should become part of the syllabus.
If companies want cadets they need to invest in their training.