Yeah but you're dying and you cannot bulk muscle. Plant consumption cause an emergency condition in humans. Our blood sugar spikes. Either we reduce it with insulin or we die. But over time insulin gets less and less effective. Huge clue that we are carnivores. The major difference between now and then was our ancestors ate seasonal plants. Not all year round. They didn't store or preserve them. And those plants were small and bitter. There is no comparison to today's plant based diets which is why mexicans for example were skinny in the past but fat and diabetic today despite corn still being a primary food source.