This is more directed toward someone reading the parent's post as opposed to the parent himself:
Despite the BSA's claims, the traditional Scout approach to religion (from what I have read) is a weak pantheistic or deist stance, not explicit endorsement of organized religion as the BSA does today. Furthermore, most Scouting organizations are officially secular (including the Girl Scouts of America) and leave in "loopholes", for instance Scouts Canada creating a substitute for its Religion in Life badge which anyone, atheist or otherwise, can qualify for (it's mostly related to cultural tolerance and ethics). In general, it makes much more sense to have it due to people whose religious belief is simply not categorized by a single organization, such as the Catholic Church. It discourages territorialism and clannish behaviour, something religious groups are almost absurdly inclined to partake in.
The BSA, on the other hand, stands alone in more or less forcing members to be a member of an officially-approved organized religion (and, yes, unapproved ones are banned, meaning that Unitarian Universalists are discriminated against). Anyone within the non-religious spectrum of belief/non-belief is simply ignored. This is almost unique and is representative of the BSA being thoroughly taken over by fundamentalist Baptists and Mormons. Many groups are explicitly run by churches and discrimination is intense.
The BSA's stances in general are unique -- gender segregation, for instance, is really only upheld by the BSA and a few officially Muslim Scouting organizations run in backwards places like Indonesia, which perfectly characterizes the BSA's rule by social regressives.
If you live in the USA, do not join the Boy Scouts of America. It is a hateful and discriminatory organization which forces swearing of religious fealty and allegiance to a pre-approved religious group. If you do not live in the USA, investigate your local Scouting organization -- some are more moderate than others. If you live in Europe or Canada, it's a pretty safe bet it's fine. Asia is a crapshoot and in Africa groups are mostly run by missionaries.