I try to eat 150g of carbs 5 days a week and 300+g on the two workout days I have. Carbs composed of starch eaten in amounts that serve to replete your glycogen stores are nothing to worry about.
I think the argument against fructose consumed in evolutionarily inappropriate amounts has been crudely applied to carbohydrates in general. The deleterious effects of fructose are numerous and well-documented, but I've never seen the same sort of evidence for starch or glucose leading to metabolic derangement. Fructose leads to no acute insulin increase but does lead to a chronic elevation if ingested in huge quantities. Glucose has an acute insulin increase but no insulin resistance and subsequent chronic elevation of insulin. Unless you're prediabetic or diabetic, glucose is great. I'm paraphrasing, but in WWGF, even Taubes says something to the effect of, "it just may be that obesity is purely the result of sugar intake, which explains why cultures traditionally consuming a lot of starch with a low sugar intake tend to not be fat." Even fructose, if consumed in more or less natural forms, is unable to create a perceptible difference in insulin resistance in an active human.
So, if your CNS, RBCs, organs etc. are using 130+g of glucose per day, then eating an amount that matches that depletion will not result in fat gain directly. In fact, carbs almost never get turned directly into fat, though they do shift the energy substrate of muscle mitochondria to glucose and away from lipids, which can lead to fat gain. This only really happens if they're consumed in amounts that exceed the body's comfortable glycogen saturation threshold. The catch with increasing your carb intake is that you will likely decrease the satiety of your meals. That's the principle advantage of a high fat diet. It's not that fat doesn't get stored as fat, because it most assuredly does, it's that a high fat diet can very easily be a high satiety, low calorie diet.
Adding in starch while maintaining a very high fat diet can very easily result in a gain in fat. You really need to lean out your diet a bit to make it work. You match the decreased satiety with a replacement of some of the fattier things you eat with leaner meats and you'll end up with low calories, optimal glycogen, sufficient protein and sufficient amounts of healthy fats.
I think we all would have been better off if we had simply taken our SADs, pulled out the sweeteners, industrial seed oils and grain, and then upped our grass-fed meat consumption and added back in tubers or white rice. The part where we became fixated on maximal fat intake and the annihilation of all carbohydrates took us off on a weird tangent that is certainly not optimal for everyone.
