No, I'm all for someone's right to self-identify as whatever they want; but I don't like it when they try to make others identify them as such. This isn't about self-identity but how others identify the person.

Uh, society is full of different groups that people self-identify as, such as nationality, political affiliation, religion, idealology, etc, and people have fought and DIED over those - including the right for those groups to exist. Not to mention that civil rights movements are based on making society identify them as equals. I think all those people wouldn't appreciate it if you refused to acknowledge their self-identification.