I understand why you are not thrilled with your experience here. I hope you give it another chance anyway. Some folks here can be abrasive and rigid. And semantics can be a hot button topic people feel strongly about. However there are many people here who are queer in some way (including me) many who do not fit into gender norms, and allies of those folks. Give yourself the chance to meet them.
Don't let one or two posters overshadow the others who did address your question. The consensus seems to be that unicorn is not necessarily a positive label and to mull that over before adopting it. Emm summarizes that point if view pretty well.