The transgenderist stance is that once a man announces he is a woman, then he was always a woman and always will be. Unless he detransitions of course. Then he was always a man and always will be. Same for when a woman declares that she is a man.

So a man who builds his entire career as a man, with all the privilege that brings, as Wilson did, can identify as a woman and these prior achievements now all become that of a woman. Even if this stretches plausibility, what with the sexism of the industry at the time. He can even receive accolades reserved for women, as if he had to work ten times as hard to be taken seriously in a male-dominated field.

This rewriting of history is also why, for example, film credits listing Ellen Page have been retrospectively updated to Elliot Page even though there was no Elliot Page at the time of filming.