[shock]

There are a lot of assertions in what you said, some pointers to resources where one can learn more would be useful.

In particular the Homininis have separated from the Gorillinis around 6-8 million years ago. In that time, lots of things could have changed in our physiology.

[cies]

This is not a very long time in evolution. We may have "adapted" to deal with more animal products (meat/dairy/eggs): those that did not take this food very well have had less offspring and now we're generally more adapted to it (though lactose intolerance is still huge in humans).

But evolving to thrive on diet that's so far off what we started with will take much longer.