Unusual Rules in American Basketball: Demystifying the Requirement of 2 Rebounders During Free throw

Now apparently the rule is specific to this
The rule requiring two rebounders during free throws in American basketball is designed to ensure fair play and maintain a balance between the offensive and defensive teams. It helps prevent a situation where one team could potentially dominate the rebounding aspect during free throws, creating an uneven playing field. By having two players from each team in rebounding positions, it promotes fairness and provides both teams with an equal opportunity to secure possession of the ball after a free throw attempt.
If a coach wants to pull their team over to the sideline so be it.
Dumb American Rules