Why would you think I don't think punctuality is important? I just say that it isn't an intrinsic measure of professionalism, while performance generally is. If the orchestra case you need to be on time, as to not waste someone else's time. In that case punctuality directly correlates as a rule, while in other cases it doesn't. Again I'm not saying I disagree, I'm saying you're agreeing with me but probably missed the second part of my argument. If by not being punctual you're wasting someone's time, then you're being unprofessional.