No, you're right. That was foolish of me to say.Why would you wish this on anybody?
I dearly hope they're just a guy who thinks it's fun to dress as a woman. Nobody deserves to go though anything even remotely resembling what I have over the last 18 months. If it turns out they are then be happy that they can be true to themselves, but hoping that they are makes it look (to me) like you haven't thought at all about the experience they have to have had for that to be true.
Though using "guy dress as woman" is the same thing many folk say about trans women, so maybe rethink your analogy?