If someone has lower than normal blood glucose levels does this mean that he can eat as many carbs wants?

No, someone with lower than normal blood glucose levels (hypoglycemia) does not "get to" eat as many carbs as they want. In fact, managing their carbohydrate intake is crucial in maintaining stable blood sugar levels. Hypoglycemia occurs when the body's glucose level drops below the normal range. While consuming some easily digestible carbohydrates quickly in this situation can replenish blood sugar, overindulging or eating unrestricted amounts of carbohydrate-rich foods may lead to excessive blood glucose spikes causing other related medical issues