Apologies if someone's already posted about this - couldn't see anything.
He's steadfastly refusing to accept the label 'cis', saying no one has the right to impose a label on anyone else. Not anti-trans, call yourself what you want, but don't force other people to accept a label, especially one that is used as an insult. Yes, Captain!
twitter.com/WilliamShatner?ref_src=twsrc%5Egoogle%7Ctwcamp%5Eserp%7Ctwgr%5Eauthor