You are right in your ideal for the music side. Many of my posts are indeed about local folk clubs, finding old mates from the circuit many years ago and chipping in with information on particular songs, tues and instruments.
However, there is a BS section. It has little or no bearing on the music side and I fail to see comparisons. In fact, in someways they could be different websites. I certainly converse with different people.
With regard to what is respectful, I am sure someone with a well polished halo and sheltered upbringing has a different view of the boundary than where the likes me me enjoys rolling with the pigs. Before anybody starts crying to the moderators, they should differentiate between actual abusive behaviour and forcefully disagreeing with a stance.
I for one was bemused to see a sanctimonious prig reckon that an odious viewpoint put politely was better than reason applied with a round of fucks. Fascinating...