Meh, this isn't an academic context so Wikipedia is fine for online discussion as long as one realizes that the strength of its arguments are in its references. To be fair, it's a great modern tool that can instantly connect the user with general knowledge about a particular subject which should be researched further to gain the particular knowledge that comes from each of the sources listed under the Resources section. I do this often. I don't do it everytime such as, for example, if I want to know the vague historical outline about a subject such as the Battle of Hastings or a general concept like how compound interest works.
Aside that, I agree that I don't have an issue using any pronouns a person requests. I had to face this situation in a school setting, the student was addressed using their preferred pronouns and all was well. However, I don't believe that the difficulty of asking for pronoun use that might appear to be incompatible with one's appearance should be ameliorated by having everyone designate their pronouns. I will not be wearing stickers that say, "She / Her," nor will I be attaching "She/her" to my signature on email.
I agree that it may be difficult or embarrassing to correct pronouns that one finds inappropriate to one's identity, but it is that person's particular condition that requires it. I am willing to accept their direction upon their request. I don't however find the need to pretend that the world needs to be told which pronouns to use for me. It has never been required and never been confused. It should be incumbent on those who have suffered confusion to alert others and make the request, not to upend the social order.
And to those who say, "We just want to make everyone comfortable," I will say that someone asking which pronouns I prefer makes me very uncomfortable. Don't I look feminine enough?!? Further, coming from an old school Feminist perspective, I don't wish to focus on my gender. I am not my gender. I prefer to have focus on my accomplishments. It's, frankly, none of anyone's business how I feel personally about my gender. In fact, my identity is not wrapped up in my gender.
Adjusted knowledge presents a great point: biological sex is important in medicine. I certainly hope transgender people who are offended when their biological sex is considered along with their gender identity, are educated about the fact that biological sex affects medical care. Heart attack presentation and course being a great example.
Sigh. Don't get too excited; I am a Democrat, but that is a step too far for me.