I can recall hearing a man say on a feminist board (no, he didn't start off with "Speaking as a man...") that he felt embarrassed about pointing out that he's male, as if it were a kind of exhibitionism, but then if he didn't say anything he felt deceptive, and there wasn't any right way to deal with it, but most of the time, not saying anything was definitely easier. He did sort of wonder if anything he'd be likely to say would ever make people think he was male and point it out, and if that happened maybe it would be thing for feminists to note ("You can always tell if there's a man around...") Or maybe people absolutely should sound like the person they are, so he'd be entitled.