"he says somebody young may well invent an entirely new kind folk club, but it won't be recognisable to the older folkie generation"

So he's talking about it, but will he START it?
Mine was called "The Broadside" in Hurst St Brum, and we only booked songwriters, that was our speciality. There was a purely Trad club, an Irish Trad club,an English come-everybody club,...there was something for everyone in Brum, but we DID it.

"will still let me in"
Well, if you show the colour of your coin what does your age matter?