OK I'm game.
I don't think Atkins is unhealthy or any other such thing. I don't think it's wrong or bad. I do think people lose weight on an Atkins diet because they limited carbs. I think any diet limits carbs. Most people are fat because they eat too many carbs. Carbs are high in calories. Carbs such as fast food, processed food, junk food shouldn't be eaten by anyone in excess. I don't think Atkins is magic. Any time you limit or eliminate these foods, you'll lose weight.
I think everyone has to find a way to eat, that will keep them at a healthy weight.
I think the bigger goal is to find a way to eat that you can stick to for life. If it's the Atkins plan, cool---if it's counting calories, cool--if it's counting fats, cool---Weight Watchers, cool, etc.
I think some people need a strict plan that is all laid out for them, others don't. But I also think the bottom line is, if it works for you and you can maintain it with little effort forever, then it's a good plan.