scouting from its inception has been about fostering brotherhood and equality across...religious divides

Scouting to this day actually practices some discrimination upon religious grounds. Those of non-theistic beliefs like atheists, taoists, buddhists, unitarians, humanists, pantheists etc are technically and often in practice barred from occupying certain roles because the rules require a belief & duty to God. It's also pretty dodgy with regard to the oath that the kids take if they're from non-theist traditions.