I think you could make a case for saying that keeping a cat indoors 24/7, not letting it hunt and express its other natural behaviours, and feeding it a vegan diet is actually less ethical than keeping animals for food in humane conditions and allowing them to do their natural animal thing before they're killed, but in deference to cesare I'll try not to derail the thread any further
I'd agree with that.
On the topic though. The page linked by Fractionman IIRC pretty much pours cold water on the misleading tabloid headline. Not that scoffing too much of anything is the key to a healthy lifestyle either...
What is "too much." You can have guidelines for saturated fats and so on but beyond common sensical ideas about not eating half a pound of sausages every day, it's difficult to give a definitive answer applicable to the population as a whole.