Assume USD is somehow attached to food, shelter, and other necessities (for the record, I agree that it is, but only indirectly). Those necessities are the things we need, but we don't need money to create them. We just need energy and physical resources (which, technically, also just require energy). All money is an accounting system built on top of the physical processes that we use to grow, gather, hunt, cultivate, shape, and build matter.
So there's nothing weird, to me, about money being built almost directly on top of energy usage. I think it makes sense.
Most money is built on top of gold or other precious-but-unnecessary materials, which I can't say seems more attached to real value than energy. But even if we assume 1 unit of money is 1 day's worth of food, who's to say that unit of food is actually a necessity for the holder? That food is a specialized form of energy; energy which has been used and which can't be unused. The food itself is an accounting of entropy. But it (mostly) can't be converted into shelter or other necessities, only traded or stored. So, again, I don't see "this money is an accounting of energy used" as outlandish, but reasonable.
Let me conclude, however, by roundly rebuking crypto grifters and the majority of the industry. They're generally not operating on the arguments I've made above anyway.