Vastly more "straight" men, often with marriages (to women) molest boys than openly gay men do. So I assume, by your logic, that only lesbians should be allowed to Scoutmaster for boys?
And what's shameful about enforcing a policy of non-preferential treatment and no government welfare for private institutions that support bigotry? If gays did indeed setup a "gays only" scouting organization, they would indeed need to pay their own way, in my opinion.
Shame on the BSA for refusing to help gay young men, and for contributing to an atmosphere of ostracization. With all the problems young gay men face in society today, they could really use a level-headed and responsible program to help them integrate into society, and straight young men could really use the lesson that there's no such thing as gay cooties.