Great point. Keto means running off of ketones. It does not mean eating meat. It also has little to do with how much fat you eat (Although many keto people, including myself, believe in eating fat to satiety)

When you're ketogenic your body is burning fat for fuel. There's a switchover period from being a sugar-burner to being a fat-burner (Even though we do it naturally every night when we sleep) This can be uncomfortable for some.