One immediately apparent flaw of this argument is the assumption of energy use growing by 10x over a century. But in developed countries, energy use per capita

One immediately apparent flaw of this argument is the assumption of energy use growing by 10x over a century. But in developed countries, energy use per capita has been roughly stable for decades. The 2 main drivers of energy growth will weaken over time (population growth + countries becoming developed). Also, if energy use does increase by 10x, the solution is simple, build giant refrigerators powered by fusion energy to cool the atmosphere. (joke)