I tried to understand the original paper but it's way over my head. So the decrease in demand of cognitively demanding jobs is an temporal economic situation or

I tried to understand the original paper but it's way over my head. So the decrease in demand of cognitively demanding jobs is an temporal economic situation or a long-term trend? It seems the theory was always that less cognitively demanding jobs would be replaced by automation/robots but more demanding ones would be safe. How to place this article in that perspective?