For ‘deadnaming’ is just a Newspeak word designed to demonise the telling of historical truths. Not satisfied with seeking to control contemporary discussion and attitudes, now trans activists and their allies (all institutions, in essence) want to control the past itself. History. No way. The past happened, it was true, and we should not allow that to be erased and forgotten just to make some people feel better about themselves.
Yet again spiked (which I never used to read) has written a good, hardhitting, sensible article on transactivism.
www.spiked-online.com/2018/10/11/in-defence-of-deadnaming/