[spsful]

Firstly, the company overseeing the tld gets to make its own rules. For example, you'd have to go through Verisign at some point if you wanted a .com domain. Second, the only things encapsulated by the term LGBTQ are sexual orientation and gender identity, two innately connected concepts. People can add as many letters to the acronym as they want but it doesn't change anything about the movement or the group as a whole.