Didn’t read because paywall, but just eat like a successful hunter gatherer from the region of your primary genetic origin, and you’ll probably be fine. Easier said than done.
It really isn't that simple. Diet has a huge influence on which of your gut microbes flourish and even their gene expression, but as an adult, its effect on its overall composition are absolutely minimal - it can't kill any species off, and introducing new ones is likewise unlikely. Even probiotics have been shown to have limited effect.
Your advice would be sound if we didn't already have an epidemic of gut microbiomes compromised by antibiotics and poor diets over several generations.
And where can we find this table of the various diets of the successful hunter gatherers from each region so we can correlate it with our genetic ancestry?
Unironically, it might. Many people suffering from IBD have found relief by ingesting certain parasites (helminth is one I’m aware of). To add anecdotal evidence to the parent, I’ve found relief with my IBD by eating “simpler” foods - on top of overall health benefits.
Chesterton’s fence is not a well respected concept in the modern world (understandably so).
Your advice would be sound if we didn't already have an epidemic of gut microbiomes compromised by antibiotics and poor diets over several generations.