I think its a shrinking market.
Like you, folks interested in C&V bikes are getting older and may be suffering illnesses that keep them off of bikes. As much as I would like to think I can do this forever, the fact is that is unlikely as I age. And like you, if you can't ride, you lose interest.
And as you pointed out, many of the best C&V heads are now gone from this forum, probably because of age and possible ailments that made them lose interest.
I think C&V might have peaked and we may never see those glory days again.