> Legume improves bovine digestion and reduces methane emissions.

For people too---but you have to pass it through a cow first and eat it in the form of beef. Otherwise ...

Gut biome is important for legume consumption. The first few months I went to a plant based diet my digestion was hell. At some point I reached a turning point though, and my gut health became even better than before. My flatulence was so much worse when I was eating meat regularly - often room clearing.

I changed to being mostly vegetarian a few years ago and the gas only lasted about a month.

What is "mostly vegetarian"?

I'm also mostly vegetarian, meaning about five times a year or so I like to eat salmon sushi.

For me it means I reduced my meat consumption by about 95%. As far as I see it that’s 95% as good as being completely vegetarian, which is a pretty good score!

I usually like the tongue in cheek term “fake vegetarian”.

> Gut biome is important for legume consumption.

Not to mention being a ruminant with multiple stomach compartments and a long gut.

Humans are quite capable of digesting a diet rich in legumes just like all our other close relatives in the great ape kingdom. They subsist on a 85-99% plant based diet, primarily of fruits, nuts, and seeds. We have clearly adapted to eat more meat as our bodies changed to master running and throwing for hunting, but we are still a variant of great apes at the end of the day.