I think he's totally out in his private life, and probably has been for quite some time, not that it makes any difference. At least not to me. He doesn't want to publicly focus on his sex life, that's quite obvious, because it's his voice and music that really count. There are tons of pre-Idol pictures and videos of Adam out there if anyone cares to look and he has said already that he has nothing to hide about himself. People can read into that whatever the hell they want, he's not obligated to elaborate. It's just nobody's freakin' business!
Adam is the best damn singer and performer this show has ever seen or is ever likely to see and to think that his chances of winning hang, if even one iota, on his sexuality, and the fact that many would vote for the other guy simply because of it - and there's a lot of that sentiment out there - is incredibly sad and disheartening.