Great point by you. These “holdbacks” are not cream so they stop rising and the non “holdbacks” who suffered so much defeat in their club days are the ultimate winners that get a partial scholarship and play on tv. In the end athleticism, speed, stickskills, positive attitude, dedication and sports iq win the day. If your son has these attributes and the “holdback” does not amen for you son. If, on the other hand, your son continues to struggle when playing teams with “holdbacks” stop complaining and realize no body cares, work harder; or stop playing club ball vs teams from other states and instead play in local leagues and tourneys that conform to the age rules you so covet.