Keto includes vegetables, mushrooms, and tons of other food beyond just meat. All Keto is is cutting carbs.

Essentially, stop eating grasses because you don’t have the digestive equipment large herbivores need to do so. Corn, rice, wheat, etc. Also cutting out sugar. I haven’t seen a single diet recommend eating sugar in my life, but maybe some bulking diets do?

It’s possible to be both vegan and keto. Incredibly expensive and difficult, but they aren’t mutually exclusive.