It does not debunk the whole thing. It did not even debunk my sarcastic comment on refusing to call someone Zir and therefor being in danger of a legal punishment. It did however give clarity on the subject that you cant get fined for mistakenly calling a transgender him/her. There are 3 primary colours, there is no sliding.. It's more like saying every colour is a primary colour then saying there is only three colours..

I do not believe that one's gender is an inner feeling. By that logic, I can feel like I am a different species aswell, and therefore demand that you address me as a dog.. (like this girl: http://www.telegraph.co.uk/news/newstopics/howaboutthat/12127067/woman-says-she-is-a-cat-trapped-in-the-wrong-body.html). Would it be wrong of me not to adress her as a cat due to the fact that she is delusional?
I can also feel like a different age for that matter, and I could also feel like I am a girl (even though I am obviously not) and therefore demand cheaper car insurance for example, which is why this will evolve into a big political issue in the future in my opinion. So yes.. this is important, and it does affect me, and everyone else.

Why I am concerned? Cause you can get legally punished for having a different belief or opinion... As Peterson says, this is a danger for our freedom of speech. This is the biggest issue. I have no issue that someone gets angry at me for not calling them crossdresser or zir.. But I do have an issue when I can be legally punished for refusing to believe (or call) someone for something they (in my reality) clearly are not. And i also believe freedom of speech is much more essential to western society then the danger of being disrespectful. I am not saying you should be disrespectful in their face.. I am saying you should be able to, without being in danger of legal prosecution.