We have to remember, Morrissey once joked about Mark E. Smith being burned alive, and it was during a hotel fire evacuation. There's almost always room for a little levity. I hope Morrissey gets better if he's truly ailing, but he has given us sufficient grounds for suspicion.
For the record, I do not consider Morrissey a terrible person for his cancellations. Even when Noel Gallagher told his pneumonia anecdote, he didn't tell it in the spirit of "Morrissey is a moral vacuum," it was more like an amused and perplexed shrug: "I guess that's our Mozzer."