Boddi, I agree for the most part. What people in here tend to leave out is: Gender is mental for all parties involved. You may think of yourself as one gender and others may think of you as another.
As bothersome as misgendering is, it is often quite innocent. If someone is convinced they see a man, they will gender that person as male, without asking/needing to see what is inside the pants.
If our internal gender is incongruous with our outward presentation, do not be surprised when you are misgendered. In fact, in many cases, the term misgendering is inaccurate. If gender is between the ears, and someone innocently uses the pronouns that reflect what they see, they have accurately gendered you from their perspective. Now, if they know better and still do it, it is misgendering.
Semantics are weird but if gender is mental for one party it has to be mental for all parties.