There is a common trend in human thinking to seek reassurance in the belief that what you're doing is the same what people in the distant past used to do, thereby giving your actions the implicit approval of a respected authority from the past. This makes its largest impact in religion and politics, but we're seeing it here too.

We have a practice of unpaid amateurs getting together in regular gatherings in a pub to play music from a repertoire selected as "traditional", "folk", "Irish" or some related category, in performances where the audience is not all that important to them and where the tunes are mostly dance music in 8-bar phrases. It's a rather specific institution, but is there some intrinsic problem with that? Why not just let it be modern? Why the need to prove the apostle James picked up a bodhran to play along with the accordionist at the wedding in Cana to make it okay?