[Cybiote]

Your point is not very different from those who say AlphaGo's is really a human victory because human teams built it. Such a distinction based on a historical trace is not a useful one to make. Similarly, the sum total of energy a modern human in a developed society has available to it is not an insightful observation to make when talking about playing Go. It is more a reflection of a civilization's wealth. The best humans from 100, perhaps even 500 years ago would still give almost all modern humans and computers a very hard time. In fact, computers are even more dependent on a technological society (and so more dependent on a large number of humans) than humans are.

The discussion is energy use at play time. For each given second, a certain number of joules are being used to compute a decision. That number as of today, in an unaided match, is independent of civilization's technological state.

That said, AlphaGo has seen a huge (10x?) gain in efficiency according to David Silver. Still far from a human but nonetheless very impressive drop in just a year.