If your new series of questions are sincere, I can only ask - then what difference does it matter whether it's John, Michael, or anyone else.
I'm having trouble following your argument/position because I, and so many others believe your issue is JLY and that the producers should be making it news that he doesn't perform a set schedule. That it's misleading to have it otherwise.
Yet... now you are raising other issues regarding a rotating cast. I don't think any advertising is touting the show as a vehicle of John's. So there's no deceptive advertising going on.
What IS your issue? That he's missed performances? that the producers aren't advertising missed performances or whatever, that the show is too vocally demanding?
You keep changing the discussion LOL
"A little nonsense now and then is relished by the wisest men" - Willy Wonka