I criticised some guy in a theme recently for doing this and had no one back me up, including the league commish.
It is not a "strategy" like high assist%. High assist players could all be on the court IRL and it WOULD help the team score. Magic, Lebron, Stockton, Divac, is not an unrealistic lineup.
I have no issue with guys doing in the playoffs because I will gladly take a free victory. But 5*48 in the regular season is just stupid and has no place in this game. If you are relyiing on that to win games, you really don't get the game. Giving away victories to some teams should absolutely be a violation of theme league rules!