Legacy is not better than TG at any level. People who leave TG purple are leaving because they cannot make TG black. Simple truth. People who leave are mad that they cannot make the TG black team. Any organization will let B team players leave if they think they can make another organization's A team.

It is no different in girls' lacrosse than many professional sports. When backup players leave to become starters they rarely remain starters because their weaknesses get exposed. Some develop to become superstars, but some remain career backups. Nothing wrong with that as long as you are playing the game you love. Problem is the parents don't see it. This is the age where it gets harder to improve and take spots from other top level players.