It means freeing your mind to give roles to other less represented people around the world, allowing them to get the kind of exposure that creates A-list stars like Scarlett Johansson.
To others, art being free of restrictions means freeing casting away from mostly white, straight, cisgender stars like Scarlett Johansson.
It also means supporting greater representation in media by allowing trans actors to play more roles, including (but not limited to) portraying a real-life trans person on the big screen.