It is scary because the gut microbiome in humans is evolving much faster in recent times. This is coming from a study that maps evolution of gut microbiome in primates to the primate evolutionary tree. They found that families of gut bacteria can be passed down over millions of years in a species. The gut microbiome has always coevolved with the species. As the species diverges, so does the microbiome adapting to the changes in the host. Except in modern humans, where it is evolving at a much faster rate since industrialization. It's a very interesting observation in my opinion and asks important questions about how the modern lifestyle is affecting the biome. For instance, what happens if a pregnant mother takes antibiotics? Will a family of bacteria get killed off in that mother's evolutionary branch?

The article is most certainly popsci and written for laymen, but I don't think it is trash at all. Not sure why you think so. It highlights some very interesting discoveries and offers you a window to dive in and learn more things on the subject if you are interested.