I was just talking with my partner about this a few weeks ago.
Lee Pace is similarly an incredibly private man. For a long time we the public knew absolutely nothing about his dating life or anything about his family outside of little bits and pieces he shared, and even that was deliberately as vague as possible.
He played a trans woman in Soldier's Girl. It's based on a true story, and he actually met with the trans woman his character is based on. During the interview, he said something to the effect of having several stark realizations about himself after working with her and learning her story and her journey and her life.
I make the joke that anyone transgender heard the distinct sound of an egg cracking during that interview. And yet, Pace did not come out. Not until he was forced to, years later.
We now know he is married to a man. We know he identifies as queer, mostly because he was forced to by an interviewer who has a reputation for forcing very private celebrities to come out or risk losing status. We know he has dated men and women. By his own admission that playing Calpernia gave him very strong gender feelings and he saw a lot of himself both in the fictionalized character he played and in the real woman whose presence he was wow'd by.
Lee Pace might be a trans woman who has found it better to boymode for the sake of an acting career. Lee Pace might be a trans woman who avidly does not want to invite a spotlight into that part of his life- and who could blame him? Lee Pace might be an egg who has just barely started to crack, peeked out from beyond the shell and is not yet comfortable leaving the closet. Or Pace might be nonbinary, genderqueer, gay-as-gender, or... simply a cis gay man who feels it is nunya and enjoys being a little fruity and feminine in his spare time.
I don't claim to know the inner workings of Pace's mind, sexuality, or gender. But I do think that it would be wrong to force Pace to share what he clearly is not comfortable sharing for the entire world to see.
When it comes to celebrities who are respectful and also private, I don't think it is a bad thing if what we as fans know about them doesn't quite match up with the demographic they're playing. Sometimes, there's a reason they found a piece of themselves in the role. And especially when it has the blessing of the real life person that role is based on (such as in the case of Calpernia) or of the real life LGBT people working with that celeb every day - maybe the people directly involved with this know more about this person than we do watching from the other side of the screen.