I think we both know why. Were I a male homo pedophile, I’d be signing up for Scoutmaster pronto (assuming I was allowed). For that matter, were I a male hetero pedophile, I’d be signing up to lead a Girl Scout troop (assuming I was allowed).
Do they have straight men leading the girl scouts to overnight camps? I presume not! My daughters would never go.
Bingo. That is the exact argument that BSA should use every time.