The gaystapo demanded that the BSA accept homo scout leaders. BSA told them no.
The gaystapo went after the corporate donors.
The BSA backed down.
If memory serves me, that is how they fell.
That's what I remember.
The turning point came when big business got their woke representatives on the organization's board of directors. Once the Trojan horses had control of the board, they had their way.
Many good leaders, staff, parents, troop sponsors, and Scouts fled weakening the organization but the gaystopo didn't care about that. They had what they wanted.
That is my read on it as well. The Human Rights Campaign (founded 1980) and GLAAD (founded 1985) were the main 2 LGBTQ non-profits that figured out the way to invade the corporate boardrooms was through their HR departments. That's how corporate America started pushing "diversity training" on its employees.
It is all communism emanating from Karl Marx's The Communist Manifesto (1848) which sought to destroy the traditional family unit and replace it with the state. The Frankfurt School during the early 1930s developed Critical Theory to supplant Marx's original oppressor/oppressed classes (bourgeoise vs. proletariat) with other identity groups vs. the dominant cultural class. Their professors/acolytes eventually landed in the U.S. starting at Columbia University and infected the academic culture during the 1960-1970s when the Vietnam War and Civil Rights movements were raging. POTUS#44 BHO poured gas on the fire with his particular version of Critical Theory - Critical Race Theory which he latched onto while in Harvard Law School.
When the SCOTUS decided in 2000 that BSA had the right as a private organization to establish its restrictive membership rules, Hollywood mogul, Steven Spielberg, an Eagle Scout and serving on the BSA's national advisory Board, announced in 2001 that he was resigning because of BSA's exclusionary membership rule against homosexuals. That was when the pressure started on BSA to admit homosexuals.
Concomitantly during the 2000's was when Protestant Christianity began its schism over ordaining homosexual preachers and conducting homosexual marriages. The following denominations were torn apart during this time - UCC/DoC, ECUSA, PCUSA, ELCA, and the American Baptist Church. Last year the UMC sent through a schism on the same issue. Many BSA units were chartered to parishes in these denominations.