Can you imagine living in a country where a boyscout can't be openly atheist and or homosexual...
I like many things about America. But there's also things I don't like, and people shouldn't sugarcoat the problems.
One great thing about America is that you can form any group based on any principle you want as long as it doesn't impinge on the freedoms of others. Theres a "Tall" club where anybody 6'5" and over can join. There's also MENSA where you have to have a high IQ. There are Christian clubs as well as all Black clubs (Congressional Black Caucus).
The Boy Scouts were specifically based on Christian principles which is one of the reasons why it became so popular. It taught a value system that many parents wanted their children to have. There is nothing stopping anybody from having a Gay boys club. I suspect the reason nobody has is because most parents wouldn't want their pre-teen and teen boys to join a club based on homosexuality.
Instead of trying to cram down your value system on established organizations and forcing them to change to suit your value system why don't you simply start your own club or organization?