Personally, removing metamucil from my carnivore diet was far more beneficial. I find fiber is valuable in the presence of carbs/plants in the diet, but in the absence of those, it has no benefit, and can actually be negative to digestive health.
However, I shared that article more as a leaping off point. There is a LOT of research out there on this subject. Caring about what you eat is a great idea: it’s just about caring about the right things. Rather than focusing on the cholesterol in your food, think about the fats in it. Are you eating a lot of chicken and pork? Those meats, in the states, are fed a diet rich in corn and soy and, as monogastric animals, will in turn have fats higher in Omega 6 fatty acids compared to a ruminant animal, like a cow or lamb, which has few Omega 6s and, instead, Omega 3s.
More great articles on the subject of fats