At the folk club I help to run, the residents are listed on the website and our flyers as are the main contact details. All the committee were recruited from the audience (including me). The original founder has long since gone to the big singaround in the sky. Existing committee members range from 30 years service to two or three. We would welcome more.
Neither your example nor mine entitle either of us to make sweeping generalisations about what folk clubs are like.