One of the pirate party guys made a Raspberry pi doohickey that did exactly that to show how stupid these calculations are. It constantly downloaded to a null device, or moved it to a null device once compete so the file never existed except incredibly briefly. I think it also tracked how many times it was downloaded so the “cost” could be calculated.

You’re comparing a laptop at idle to the power supply for a pi that needs to power it at full load plus overhead and inefficiencies. That’s like comparing apples to an orange tree.