Got all 3 endings. Wonderful little exploration of the topic. Could have benefited from some music/sounds!
My two cents on passing: To me it meant the world when I just couldn't do it at all yet. When I managed to finally pass on some occasions, after being relieved initially, it started to become less important. Now it's fine when I don't pass, because I knew I could if I wanted to. When I got to know about cis women being misgendered based on their looks or voice too, the whole thing started becoming kinda absurd to me.