Gene expression changes are very common with food. What you eat commonly changes gene expression, this is why inherited traits are not very relevant to your health. What diet you inherit is much more important. If you have a family history of a certain illness it's most likely that your diet is what is expressing those genes and not your inherited traits. This also means if you change your diet you can plot whole different disease and health outcomes.
Most people are going to assume this article is bad news because they don't understand this fact, that makes this article pretty suspicious (without having read it) in my mind. Industry propaganda "science" isn't uncommon, a few years ago a big set of papers were published that were basically made up evidence that were completely bogus that was written by a pro-industry lobby, the reason was because of a pro plant based diet health related documentary that came out at the same time. It's a tactic of sewing doubt in peoples minds, if people have doubt they wont change their behavior or oppinion for the better.
I'm gonna read this article later and I hope it's not propaganda..