There is a lot of " this researcher reports this finding, so it must be true that......" I think they may have cherry picked their sources. There is danger certainly of this happeneing, and some of their science left me feeling uneasy.
It is a discourse study in that it has no checks in place or counter balance - it is in effect a nerds equivalent of a blog, and comes down largely to their own opinions. i wonder what other endocrinologists make of their findings.
Interesting nonetheless, and may contain valid conclusions. Certainly wheat flour in pastries meets the reward (~exorphins) criteria. I do believe that gut mcrobionta are important. just not sure this is the definitive answer to it all,
And dairy may be similar, certainly whipped cream in eclairs is a case in point. Or ice cream sodas, or just double cream. But if double cream is such an exorphin source, then it is mainly protein, so where do these opiod like molecules come from? I am left mindful of the theory of Phlogiston proposed by Dalton to explain the gases that make up air. I expect that this is a simplified version of what is really triggering these illnesses, but then again, most endocrinology research is not written in english so that may be why they wrote this report.