That's fake news. The BSA actually kept a blacklist so they could keep suspected predators out based on hearsay alone prior to national background checks existing. Probably illegal because it is essentially defemation, but erred on the side of scout safety. They introduced concepts like 2 deep leadership decades ahead of the culture caring about the issue.

Ambulance chasers somehow got hold of it and used it as a shopping list. BSA falsely admitted fault because they were trying to board the #metoo train. The public, instead of praising all the efforts above and beyond they took now and in the past, and they were still sorry about those that snuck through, started looting from the boys of today. BSA didn't even fight the illegal ex post facto laws passed targeting them.