Just a final comment from me, in case I seem like some cold-eyed monster who eyes performers up with a red hot poker in one hand and a penile clamp (look it up) in the other.

I'm really very supportive of performers who are learning or trying to up their game, or who are genuinely giving of their best. This phrase from Musket strikes a chord with me:

there is a difference between not able to keep words in your head and not trying in the first place

That is the essence of my argument - the not trying in the first place.

I posted a recent thread on helping a poor singer to sing better. As I said in that thread, I was well impressed with his successful steps to wean himself off the music stand and play a reasonable fingerstyle guitar, after seeing him "mumbling away" two or three years ago. I said words to that effect after a session we'd both attended, and he seemed quite chuffed at hearing that. It was then that we got round to the topic of his singing and what was needed - but that's for the other thread.

I really don't mind what people do. (I've always said "Have what you will - and pay for it".) But I do mind what effort they put into doing it. Three cheers for trying - no cheers for being lazy.