Hypothetically, if I said I think you are a Chaos Angel, not a Sith Angel, would you have made an equally long response to why I shouldn't say you are not a Sith?
A good question. Probably not. Defending the position that I play the part of a chaotic element was easy because it was factually true. I do ever so enjoy the debating from the equivalent of the high ground. How exactly am I going to go about arguing the point that I'm a Sith Angel? Beyond stating that I like the Sith (I like the Jedi too), what position could I take?