You might see that as pedantry, but since I'm an American I'm acutely aware of how Americans like to say "that would never work" when what they actually mean "that would never work for Americans." The United States is enormous and the #1 consumer of electric energy, yes, and we need to plan accordingly. That doesn't mean ideas are bad in the general, it just means things won't work for us due to our size, as you astutely observe. Google could never scale PostgreSQL to handle their index; does that make PostgreSQL silly? You're automatically writing off all future development that you could never possibly know when you dismiss a technology because it doesn't work in one case.
I like to use every opportunity I get to point that out, so my fellow Americans will stop doing it and making us look like self-absorbed, spoiled people internationally, an assumption reinforced by our general diplomatic and military behavior on the world stage.