Other than perhaps demanding that people refer to you using different pronouns, I don't see how any part of transition can even qualify as harm. Transition is something that you do to yourself, for yourself. If you don't request that other people use certain pronouns, then transition actually has nothing to do with them in any way, whatsoever. What you are calling "harm" is actually other people taking offense at something which has little or nothing to do with them. Since it's 99% them doing it to themselves, it doesn't really qualify as harm, and it certainly doesn't qualify as harm sourced by you.
Think about it this way. Let's say I have a deep hate for apples. I go to lunch with someone and they eat an apple. I make an ugly face and I proclaim, "That apple disgusts me. You should eat an orange."
Have they harmed me, or am I just being an oversensitive prick?
Now replace the word "apple" with "male" and "orange" with "female" and you'll get an idea about how much "harm" you actually do to people by transitioning. The "harm" is all in their own heads. You haven't done anything to hurt anyone. You haven't initiated violence. You haven't even done anything which directly affects them. They perceive that what you are doing is wrong, and they take offense at what you do based on their own subjective perception.
It would be like my being offended by a painting and claiming that the painter harmed me. In reality, the painter never harmed me in any way. I merely took OFFENSE to the painting. In reality, I have not been hurt or harmed in any way. Only my feelings have been hurt. But, emotions are irrational. People can take offense at ANYTHING. Therefore, the fact that someone takes offense at something is essentially meaningless. You can't define "harm" based on someone's personal subjective feeling about something, because then "harm" can mean anything.