The secret identity isn’t designed to literally be a secret – it’s your hero identity, if you’d prefer to think of it that way, the name you give to the source of strength and heroism inside you. There’s no reason to worry about sharing it with your allies – most allies find it pretty cool to see what their hero has chosen for their secret identity! I hope that helps explain the intent behind this part of the game. If you have any additional questions, please let me know. Thank you!Lynden Alan Shields commented
I think this should at least be made more clear.