You could say it's unnecessary, but Gay bars at the time of release, and to an extent even to this day have this shit written on them, often as a reclamation of the term. Same goes for f*g - queer is now just part of the lingo, when it was a slur before. It's 'in your face', it's provocative, and I've seen people of such groups take pictures with those exact signs as a 'haha, that's us, we're f-gs/tr-nnies, fuck what ya heard' sort of thing.

Of course, there are different flavours of queer bar, some are much softer and strive for more of a safe space feel, but there are certainly a lot that lean more into being sleazy, punky, and even intimidating.

Perhaps I'm being too generous. I could accept that I am.