Is it wrong to wear a band T-shirt to their concert?

Cultural critic Steven Hyden discusses the no-band-t-shirt-to-that-band-gig rule in his latest blog post. He first makes a distinction - it's quite ubiquitous on a metal show, but a no-no at an indie-rock show. His point: "When you go to show, nobody cares about what you are wearing. If there is one quality that all humans share, it’s that we’re all too wrapped up in ourselves to think about the shirts on the backs of strangers".