No licensed vet would ever say a morbidly obese cat is 'fine'.
The owners fed the cat into morbid obesity, that was the diet it was on.
That cat was too fat to 'work out'. At that size, it would have been in pain from the strain on its joints after walking to its food bowl.
The cat died prematurely due to this abuse, I don't even have to check the age it died to be able to tell you this.
Stop defending animal abusers.
Ok. Your recommendation to read the FAQ about the abused animal and your posting of that extract from it, seemed to imply otherwise.