The Nazis often justified their actions by appealing to a God of Natural Selection. They alternatively suggested that victory of the superior races over the inferior was inevitable, and that opposing such a victory was an eternal sin. This is a contradiction - how can you oppose something if it's an iron law of nature anyways - but the rhetorical flourish accomplishes two things:

1. First, it absolves the Nazis of any crimes they commit. They didn't start the race war; they were just acting according to the will of Nature. Leaving the Polish alone would just be tolerating the existence of free energy that someone else will eventually pick up and use against them. The nazis are just the smart ones who made the first move instead of waiting around for others to do it.
2. Second, it uses a naturalism fallacy to redefine "good" as "following the Nazis' local incentives". If you say that acting according to your local incentives, i.e. crushing your weaker neighbors, is the Natural Thing and therefore Good, then that gives you permission to start a fight with whomever you want. You can do no wrong except lose, because the Gods will always ensure that the stronger and therefore better population will win.

In this sense, the "Thermodynamic God" stuff is kind of generalized Nazism. I'm not saying that people who believe it are Nazis - they're not consistent enough in their application of that ideology to go that far - but apply the "free energy" justification to both obviously antisocial games in addition to prosocial ones and you see that it justifies both war and trade.