"Ord points out that in many ways the practices of the Revival, including sing arounds in clubs were designed to give a feel of authenticity and tradition, but were in fact highly artificial happenings." We know that. Academic works often need include statements of what most people thinks are obvious.

"there is nothing traditional about a person singing into a microphone in the company of the sound technicians." We know that as well. If Jim was a sound technician (I am not doubting that he is competent with equipment) aiming at a recording that could be published, rather than capturing something that would pass, then I think he would have had the clocks moved out.

Academic works often need to include statements of what most people thinks are obvious.