So would I. The article is full of assumptions and anecdotal evidence but no statistics. Fat people drink diet soda and assuming that it is the soda that makes them fat is a real stretch.
I question the correlation as well ... there are also umpteen studies which show that the increase in weight is due to the consumer thinking he's *saving* calories by drinking diet instead of sugar soda and can therefore afford that additional burger, the big, big order of fries, etc. In other words, they EAT more when they drink diet soda.
I don't buy the body-craving issue either.