I know where the fixation on numbers came from. The article in Wikipedia about folk clubs that says

The number of clubs began to decline in the 1980s, in the face of changing musical and social trends. In London Les Cousins in Greek Street, where John Renbourn often played, and The Scots Hoose in Cambridge Circus, were both casualties.[13] The Singers Club (George IV, Lincoln's Inn) closed its doors in 1993.

The decline began to stabilise in the mid-1990s with the resurgence of interest in folk music and there are now over 160 folk clubs in the United Kingdom, including many that can trace their origins back to the 1950s

Whoever is fixating on the number is completely missing the point about the decline being down to changing musical and social trends and now stabilising.