Erm.....I've been a musician for a long time now and I know musicians across the spectrum from up-and -coming to well-known names. I wouldn't usually broadcast this but I'm replying to the above quote. On the whole smugness and arrogance are "qualities" I certainly don't possess and it's rare that I come across it with people I know.
That quote is crass, cheap and ill-informed.
I did say "generally" because there are always exceptions but im also a musician and i can say from experience that it is the case,a lot of them are smug and arrogant because you need that arrogance and smugness to succeed or at the very least the confidence not to resort to writing music for the mainstream.
I dont believe that arrogance and smugness are a bad thing to be honest especially when its well founded.
Arguably if you didnt have the arrogance of johnny rotten for example its likely this website wouldnt be here today and hundreds of bands wouldnt have seen the light of day.