If the "gay community" bans or criticizes a gay organization for political purposes, that does not make the discriminated against organization less gay.  NAMBLA was formed by gays, for the purpose of gay liberation, to fight mistreatment of gays.  All its original founders and celebrity supporters were gay icons.  Until the right wing decided to use NAMBLA to target the gay community, and gays decided that gay rights wouldn't happen with NAMBLA attached to their movement, NAMBLA marched in gay pride parades, and belonged to many gay unbrella organizations.  Gays do not get to cherry pick those parts of gay history which they think will pacify their critics, and retroactively declare some of their former activities "non-gay."  That would be like the NAACP declaring Jesse Jackson's Rainbow Coalition to not be a part of the Negro community.