It is an impressive vehicle, but its also vastly narrower than the Model S, and actually also narrower than the Model 3. Their efficiency "advantage" is likely just a function of these differences. A long Model 3 would beat it on these parameters, if Tesla chose to do so.
How is that reaction different than those that dismissed the iPhone in 2007 because it was sold for $500? Remember Ballmer laughing at the iPhone? https://www.youtube.com/watch?v=eywi0h_Y5_U