Why does Rostow say that a country's economy cannot achieve sustained growth in the traditional social stage?

The traditional industrial economic growth model is unsustainable, because it is at the expense of excessive consumption of resources and destruction of the ecological environment.

Contemporary crises are caused by human beings themselves. The traditional development path of western industrial civilization is to achieve economic growth at the expense of destroying the basic living conditions of human beings. Mankind has come to a crossroads, facing the choice of survival or death. It is against this background that mankind has chosen the road of sustainable development.