Gut microbiome changes can be linked to anything - after all, that is its job! While the Viruddha Ahara (incompatible foods) concept refers to individuals themselves, to my knowledge ancient sages refer to general observations, rather than the specific ways in which bacteria may behave in the gut. Interestingly, turmeric/haldi is a complex multi-component mixture that has long been known to reduce inflammation. My view is that indigestible tannin-like polyphenols travel unchanged through the gut and stimulate the microbiome directly, while "modern" western medicine has focused on just one allegedly "antioxidant" bright yellow component, curcumin, which they try to force into the body with the aid of piperine, a black pepper-derived alkaloid. Unfortunately, curcumin contains alpha, beta-unsaturated ketone functionalities, with all the toxic liability that this implies. More work to be done! Read this (published last month) for a new take on microbiome-based biology: https://www.mdpi.com/books/monograph/11314-dysbiosis-of-the-evolved-intestinal-microbiome.