Sadly, too many beerguts and not enough altitude is exactly true and I speak as one who has been dancing (or trying to ) for about 40 years. When I started, lots of young dancers, and lots of singing. And now lots of us are the archetypal ageing folk singer/dancer.
When I see young dancers, it's great!
But ( I paraphrase as I can't find the article ) 'The Irish, Welsh and Scots are justifiably proud of their heritage of traditional music, song and dance. The English, however, are rather embarrassed by theirs.' The original article was written before WW1, and what has changed?