That's a good point. I can see where somebody can easily take the idea of somebody (especially a GG) because they are a woman, trying to help as criticism instead. I think the goal of most MTF's is to look as convincing as possible and many are sensitive to any advice or help because they are so serious about it they can be offended.
I guess the best thing to do is just be careful unless the poster acts for constructive criticism and even then I'm not so sure.