You miss the point entirely. The whole reason to have an alternative to the BSA is strength in numbers. If everyone "starts their own group", it will go nowhere. We need an umbrella organization that EVERYONE can rally around who opposes the BSA's embrace of "openly gay" members. That is precisely WHY Trail Life USA was settled on by a nationwide task force, and "carefully vetted and is intended not to be political or controversial"
It's certainly an excellent idea, but allowing only Christians to join will defeat their own purpose. Since I believe Christ is the messiah, I can join, but numerous others who believe in traditional values and oppose the BSA's gay agenda will not be able to do.