My favorite responses from the thread are of @elvismercury and @jeff.
I think Salyor is pretty precise in describing Bitcoin as digital energy. It is as accurate as any metaphor could be!
However, metaphor is not exactly the 'thing' it describes. And, I am pretty sure the digital energy metaphor may not work for Bitcoin from a specific POV.
2nd if Saylor came up with this metaphor at the time Bitcoin mining was getting attacked as a waste of energy, I would give him a couple more brownies for the metaphor.