Queer has developed new connotations more recently though, hasn't it? Nowadays Queer doesn't only mean homosexual, it pretty much means anyone whose sexuality deviates from some notional cis/het/missionary norm. So it's a term almost anyone can claim if they want, or can be used on almost anyone, and it's probably losing its power.
William S Burroughs used it as the title of a book so as to shock, was he also looking for solidarity? I don't know but I doubt it from the tone of the book. I think he was looking for condemnation. I mention this because it's a famous and permanently-etched cultural use of the word. I don't like it much, maybe I'm old enough to feel the scorn in it. So yes, I personally would rather there were another word to use without the negative history and connotations.
Luckily there are other words to use without that negativity attached and I myself would tend to use them.