What am I missing here? Aren't all the graphs in that paper just a correlation/causation joke waiting to be made? I could probably fit "number of mobile phones

What am I missing here? Aren't all the graphs in that paper just a correlation/causation joke waiting to be made? I could probably fit "number of mobile phones sold" to the same curve and have "proof" that mobile phones are causing gluten intolerance. The rest of the paper is way above my head, but certainly seems speculative and doesn't appear to have any actual evidence or study behind it. Given the motivated reasoning that happens often regarding topics such as these... I'm suspicious.