There is so much BS here, I'm not sure where to start:

Invoke the name "microbiome" and the transparent quest for research funding becomes clear. Yes, let's better understand and eventually manipulate the microbiome to solve this perplexing problem. That way, we can string the funding along and ignore the most important parts of solving the problem.

BG spiking needs to be studied? How about insulin spiking due to the food ingested?

Epigenetics has become the other big thing discussed, as scientists are finally agreeing that rapid gene mutation is not possible, but environmental factors influence health to a great degree. Ok, Sherlock, how about looking at lifestyle and referencing some of the current clinical practices that are having great success in reversing the symptoms of metabolic syndrome/ insulin resistance/ T2 diabetes.

Continuous glucose monitoring is informative and better than periodic BG testing? No kidding! But until we understand one's insulin response to diet, we're only managing one of the symptoms and not managing the root cause.

Forget the microbiome and look at how people ate before the food pyramid.