Assumptions are presumptuous and harmful. Everyone is a they/them until otherwise stated. These are extremely useful pronouns.
You're a they/them.
Calm down. You seem to be overly attached to regressive labels. I don't know what drives this in you, but the universe is burning and people just want to be happy. Your life is short; you're going to die and rot away. Is this really something to get worked up over?
In the future, when our descendants are all uploaded to computers or replaced by an AI overlord, people will be all sorts of genders. They won't be bound by yesterday's norms. Would you be a stuffy gender policeperson, or will you just let people be who they are?