For those of you who shudder at the thought of a penis in the stall next to you, I have a question.
Transgender women don't exactly go around advertising who they are and none of the ones I've known irl look remotely like a man in drag. Add to that, I've known a few masculine looking women who in fact are biological women. Then you have the ones who've had the surgery, no penis, but still have masculine features.
So how would you even know who to be offended by?