Actually the modified Atkins requires some carbs. Your original post said MEAT AND SALAD. i didn't include her comments regarding vitamin deficiency etc.
Also, she noted no one ever stays on the Atkins as a lifestyle. You can guess why right, lol. It's not sustainable
"Requires" . . . you make it sound like you have to make a special effort to get some carbs. I have a friend on the Atkins diet. He can't get zero carbs. He tries very, very hard to get under about 1 slice of bread of carbs per day.
People can stay on low-carb diet indefinitely. You start out with very low carbs while you lose weight. Then, once you lose your weight, the typical person can up the carbs and maintain that new weight level. That's what I do. I had lower carbs while losing weight, then upped my carbs and maintain once the weight was gone, and I maintain my lower weight without any difficulty on my low-carb diet.
This low-carb diet is sustainable for me without a lot of work and no hunger.