Hot take but like…. trans people like don’t have to disclose that they are trans if they don’t want to. Trans people can work with you, be friends with you, and yes, even flirt with you, and not have to tell you they are trans. Our existence doesn’t require a full disclosure agreement.
And furthermore, someone not disclosing that they are trans doesn’t mean they are any “less proud” of being trans that someone who doesn’t disclose that they are trans! So quite telling trans people they need to be out everywhere all the time (potential putting themselves in dangerous and uncomfortable situations) or they’re “ashamed” of themselves!!!