I think the best I ever heard was from John Reilly's Granddaughter Trish, who said her grandfather was not booked at a Dublin venue in the 1960s because they didn't like unaccompanied singing and only booked Folk singers.
Martin Carthy told me he was invited to see some singers at a club in the early 1960s by an acquaintance who told him there was a great folk singer and guitarist on but for some reason they had booked some old man with no teeth. His name was Sam Larner.
A certain well known singer entertainer told me in all sincerity that the first performers to sing in an English accent were 'The Beatles'.
Another contemporary singer upon hearing the cylinder recordings of Joseph Taylor announced 'Well some anorak will want them'.
I'm off to take two of my red pills and have a lie down in a darkened room.