BTC is quite literally made out of hot air. Burning coal to create hot air to spin turbines is the most common energy source for BTC mining. And "hot air" describes most of it's coals replacements as well.
Yes, if in your analysis digging up fossil fuels to power the entire world infrastructure is just a side effect of sustaining the currency's core value. Good thing cars, airplanes and shipping have as much intrinsic value as waste heat.