The deadnaming issue is a serious and not self-evidently solvable conflict between LGBT community etiquette and journalistic best practice. "Actor Elliot Page comes out as trans" is not going to be a meaningful headline to just about anybody because as far as the general public was concerned there was no "actor Elliot Page" before the last couple of days. Insisting that the media is obliged not to clarify that this is the person formerly known as Ellen Page is akin to when people insist that headlines are obliged to name random Malawian schoolgirls who build power generators.
Maybe a headline such as "
Juno actor comes out as trans, introduces self as Elliot Page" would work, and then include his previous name in the body of the article? It's a little clickbaity, but it at least solves the problem of not including a deadname while still communicating that Elliot Page is the new name of an already known actor.
I agree that there's no great solution, though.