The Edge program and the 2019 LI Express Westchester kids injury should not really be part of the HOLDBACK conversation. The Edge 2019 team was made up of current 9th and 10th graders--not holdbacks....they are just outright cheating and putting kids at risk of serious injury.
If you are a current 9th or 10th grader you are NOT a 2019 grad year. Therefore, you should NOT be playing on a 2019 team. Nor, should the EDGE LACROSSE program be permitted to stack a roster of older kids and enter them in a 2019 division.