But how do you play jigs and reels "fistly"? You must be a bodhran player...

seriously, to get back to the question before "would so and so consider himself a traditional musician?" Well, no, but that's because the term was applied from the outside. Most people who have been considered "traditional" singers were pretty well aware that they preferred old songs to newer ones, but they didn't call those old songs "traditional" for the most part. So it's a question of terminology. Likewise (and correct me if I'm wrong here), I don't think Scan Tester would say he played "traditional" music, because that category was mostly used by a social group he was not a part of. This doesn't mean the category is necessarily invalid, but it does prove the importance of remembering what kind of category it is.