IMHO carbs aren't the problem as much as what those carbs come from. I personally think many cyclists consume too many "energy" bar type processed snacks. The best diet will contain a large variety of the most nutritious foods with the least amount of unhealthy ingredients. Getting anyone to agree on what is healthy and what isn't, is a daunting task. Personally I eat mostly whole unprocessed foods including carbs. I will make my own energy bars with toasted oats, dates, dried fruit and berries. The one thing I don't do is trust the food industry with my health.