That is not what any of the studies I have read find, particularly not past the short term: past calorie restriction diets is one of the factors associated with developing obesity.
A _past_ calorie restriction is associated with a _current_ calorie surplus.
Obviously if the calorie restriction were being continued, one wouldn't be developing obesity.
It means permanently adjusting your caloric intake to levels that allow you to reach and maintain a healthy body weight and body fat makeup.
If you're eating 6000 calories a day there is no way you're out-exercising that diet while working a full time job.
A _past_ calorie restriction is associated with a _current_ calorie surplus.
Obviously if the calorie restriction were being continued, one wouldn't be developing obesity.