Did you read the article?

The article claims that inflammation is both a symptom of other problems (when in reasonable ranges of signalling) and a causer of problems (when signalling too much).

I know the title of the article itself is a bit sensationalist, but I would assume that any tests aiming to determine if inflammation is the cause of a problem in specific would also check to make sure that the inflammation was in the "starting to cause harm" range rather than merely in the "signalling" range.