I think it depends on where you live, and in which circles you move. If seen in real, I am transitioning since I was born, because I never was close to how a cis man is, but I was required to copy them. I never felt threatened during my "male" time. I started to feminize more and more 15 years ago, and have to be threatened yet!
I do not tell everybody that I am trans. Only my close friends know about it, and it is nobodies business to know what I am. To the outside world I am either a woman, or a man, and not trans woman or a trans man (I am actually trans for both gender

). I would reveal my status if I would want to have an intimate relation with either a man or a woman, because they might to expect things that I can't give. But otherwise, nobody needs to know!