Perhaps that connotation is because of the group in question? I dislike playing word games, the words we use should be interchangeable if they refer to the exact same thing. It's kind of like how we went from Negroes to Black to African Americans in an attempt to combat racism, but the racism was the problem, not bad words, and it only gets confusing when you word police. I was talking to some social justice types before the term was used in a derogatory way online and they described themselves that way, and the first place I saw it online was as a self-description of those groups. Words get loaded with bad affect because people have negative thoughts about the thing being referred to. I think any decision to use a new word that predates changing the thing to which we are referring is premature.