This is exactly my attitude towards myself, and anyone else.

If I guess your sex wrong because you present yourself ambiguously, that is kind of the point, isn't it? If you tell me how you want to be named and sexed (or not) I'll respect that. If you are or act offended because I'm not clairvoyant and/or don't spend my days studying your social media profile to make a better educated guess, then we won't have anything to do with each other. I've had both situations in the last few years, and I'm fine with either.