It's just way more complicated than that. Those ratios you mention -- there's no science behind them whatsoever. Everything you've been taught about diet the last 50 years is based on a foundation of crappy and corrupt science.
Re glucose, I was discussing this with someone who runs a lab at Penn and understands it deeply. It is true that your body requires a small amount of glucose for mitochondria, but it can produce that small amount by converting proteins if you're not getting any carbs in your diet. Meanwhile for 95% of your actual energy needs, your muscles can fuel with ketones and so can your brain. In fact she said there are lots of indications that the brain functions better on ketones.
So people can live quite well on a very low carb diet -- as low as 20 grams a day. That may not be optimal but you can totally do it. There are indigenous populations like the Masai in Africa or the Inuit where the diet (pre western food) was very well studied, and these people lived on fat and protein and very little plant material, and they were (at least according to the people who studied them) very healthy, no obesity, no diabetes, no cancer.
The one thing in your comment that makes sense to me is that an excessive intake of protein can strain your system. Too much protein is hard on your liver and kidneys and other organs. And, because your body will convert that protein to glucose, too much protein can prevent you from losing weight.
So I think the general consensus among the more scientific low-carb approaches is that the optimal diet is high fat but not high protein. Extra protein beyond what we need does not benefit us. But if we over-eat fat, the body tends to just throw it away and not store it (as long as we're not eating carbs and raising our blood sugar). This is why obese people can eat 4,000 calories a day of steak and lose weight. But I don't think anybody argues that is a sustainable diet.
Atkins, despite its reputation, is not about gorging on red meat. Atkins is actually a diet very high in vegetables -- but they need to be non-starchy vegetables -- and modest, normal portions of protein -- and typically between 50-150 grams of carbs -- the amount depends on what the individual person can tolerate.