You are being a bit reductive. For understandable reasons: the articles actually are repetitive and not terribly information-dense. This is because most of what sciences has uncovered about the microbiome so far does not translate well to journalism even when it's directed at a semi-technical audience.
The microbiome is insanely complex. In some ways I believe the GI tract is a more complex system than the brain (in terms of more variables all cross-interacting which has significant and sometimes severe influence on health outcomes). We are a long way away from fully understanding any single aspect of it, let alone how multiple aspects of the GI or microbiome work in concert.
The microbiome is insanely important in human health. It is the absolutely critical foundation of our entire immune system, for one thing. Yes, a good diet is foundational to health. But if you encounter enough microbiome research, it becomes quite clear that a proper diet is not a magical cure for a whole lot of severe diseases and disorders in which the microbiome is moderately to strongly implicated. And various extreme and fad diets don't really bear out in the research to cure many let alone most diseases in large populations (aside from the few obvious ones, type II diabetes, obesity, lower risk of heart disease, etc). Eating well is better than eating like crap just like not slamming heroin is better than becoming a junkie.. but that is not where insights from microbiome research begin nor end.
If you get impatient with the slow pace of actionable results, do keep in mind that researchers are only looking closely at only a fraction of the 1,000 or so species that make up the 100 trillion bacterial cells in it, and almost none of the fungi and yeast nor the viruses that also compose it (the latter of which are now believed to vastly outnumber the 100 trillion bacteria!). All of these critters produce side effects - whether good or bad (eg bacterial and fungal metabolites, many of which are critical to host immune signaling and other essential aspects of human health).
The microbiome is insanely complex. In some ways I believe the GI tract is a more complex system than the brain (in terms of more variables all cross-interacting which has significant and sometimes severe influence on health outcomes). We are a long way away from fully understanding any single aspect of it, let alone how multiple aspects of the GI or microbiome work in concert.
The microbiome is insanely important in human health. It is the absolutely critical foundation of our entire immune system, for one thing. Yes, a good diet is foundational to health. But if you encounter enough microbiome research, it becomes quite clear that a proper diet is not a magical cure for a whole lot of severe diseases and disorders in which the microbiome is moderately to strongly implicated. And various extreme and fad diets don't really bear out in the research to cure many let alone most diseases in large populations (aside from the few obvious ones, type II diabetes, obesity, lower risk of heart disease, etc). Eating well is better than eating like crap just like not slamming heroin is better than becoming a junkie.. but that is not where insights from microbiome research begin nor end.
If you get impatient with the slow pace of actionable results, do keep in mind that researchers are only looking closely at only a fraction of the 1,000 or so species that make up the 100 trillion bacterial cells in it, and almost none of the fungi and yeast nor the viruses that also compose it (the latter of which are now believed to vastly outnumber the 100 trillion bacteria!). All of these critters produce side effects - whether good or bad (eg bacterial and fungal metabolites, many of which are critical to host immune signaling and other essential aspects of human health).