The most hurtful things I have ever had hurled my way since I started transition were from post-op women who were sitting in judgment, using their post-op status as their credentials for explaining my failings as a person and as a woman when their opinion was neither solicited nor wanted.
It has happened on more than one occasion and in more than one setting.
Now, I know some fabulous post op ladies who would never do that. But I also have yet to have a pre-op woman even come close to what some have said.