don't belittle it; explain why you think it's silly

I don't think it's silly, I think it's dishonest and provocative. You trailed the 'professional standards' hook earlier on -

Jim, I assume the actors will be getting paid for their efforts. Maybe that's where the difference lies.

- but nobody bit. If Jim had agreed with you then you would have had a case for saying that he'd said professional performances were more reliable, which might just about make it possible to extrapolate to the idea that amateur performances should be shut down. Just about.

If he'd agreed with you. He didn't. In fact, he specifically denied that he was calling for professionalism:

An appeal for basic standards has been met with responses like 'elitism', 'prima donna', 'exclusion', 'auditioning' 'glass ceilings', demanding 'concert standards' and only selecting the 'few who are good enough to sing' - none of which have been suggested by those of us who prefer our songs well enough rehearsed to be enjoyed.

I'm not saying you haven't got disagreements with Jim - I'm sure you have. I look forward to finding out what they are.