Saw this article and thought, 'Where the hell is he coming from?'
In the era of Lonnie I was probably more committed jazz fan than folkie, that came later. However, then and now I see nothing wrong with excursions into Music Hall, Revue or whatever.
If people don't listen to the music, it dies. I'll put up with the odd excursion into Music Hall if it grabs someone's attention for long enough to get them to hear Grand Coulee Dam.

FC