I was listening to one of Dave Asprey's podcasts yesterday with Paul Saladino (Kick Veggies to the Curb and Go Full Carnivore)
https://blog.daveasprey.com/paul-saladino-621/ . They mentioned that the consumption of too much protein will raise fasting blood sugars (into the 90s in people who usually have lower levels). That can be a big problem in people who eat Carnivore and are too dependent on muscle meat.
I would think that organizing a healthy grass-fed nose-to-tail carnivore diet would be quite challenging. I have yet to find the right balance of protein, carbs and fat to have consistently good blood sugars. Too much protein raises my fasting. Too much fat seems to keep the post-prandial from spiking but keeps it a bit elevated for longer and too much carb spikes the blood sugar higher than I would like.