I don't mind people discussing Mika's sexuality, sharing their ideas and their speculation, I just don't like it so much when people disagree with other people simply because they think they are right. The topic of sexuality is a large one and is not to be discussed with a limited perspective, but rather with an open mind. However, I believe that it's because of this that the discussion can sometimes turn out catty, which may lead the thread to be closed or even deleted; not because it's "banned" out of respect for Mika's privacy, but rather because the amount of arguments and fights it may cause.
If someone is to talk about it then I think it should be moderated. That's what I think, anyway.