So identifying as a broader classification automatically makes you a narrower sub-classification? Poor logic and a poor analogy to the issue of identity. Given our society's views on how sex and gender are defined and the narrow categories into which people are generally placed, distinguishing between how you might be identified by others and how you identify is valid. Re: Tumblr, I prefer to use the original source material whenever possible. Attempting to discredit the thought by attacking the medium through which it was presented only raises questions about your own sensitivity to critique.