That's ridiculous. If they don't want to do it, there's nothing wrong with just saying they don't want to do it. FWIW, I used to be acquaintances with Danny Gatton. At the time all I knew was he played guitar. I didn't have any idea he was one of the best players ever. I'll never forget the completely dismissive look he gave me when I suggested we play together some time. He didn't know anything about how well I did or didn't play, but I got pretty much the same look the queen of England would give a dishwasher who asked her out on a date.