It isn't even a "wants" to identify as thing - it is simply an "identifies as" thing
Man and woman are not the only genders, and the sooner than the world as a whole comes to acknowledge and accept that gender is not binary in nature it can move beyond giving a fuck about it altogether (in the sense of it just being something no one really cares about someones gender as important in how they treat someone, not necessarily ignoring its existence)
Sure, you should never misgender someone purposefully, but I think it is really on the person to decide on their pronoun of choice and express their desire for others to us it
Cisgendered men and women are the majority, so it makes sense to refer to things mostly as him/her and he/she - unless someone expresses a desire for you to refer to them otherwise