normal human things like consuming things in excess.

Excess and normal are contradicting each other in this sentence.

Yes cellular metabolism can use glucose, but that glucose in humans does not need to be eaten in the form of carbohydrates, the body is perfectly able to make its own glucose via gluconeogenesis

Fats need to be balanced.

What does this mean?

Vitamin C is also lacking in an all meat diet devoid of organ meats.

Vitamin C is in meat in small amounts, but if one is eating only meat then there is not glut4 competition and that vitamin c is very effective.