In general, though, the water analogy is actually quite good. The electron gas in conductors behaves a lot like a normal fluid. It easily covers linear components like resistors, inductors, and capacitors. Nonlinear components like transistors and diodes require more extensive analogy that is no longer very accurate.
The rest of the video seems pretty good though.
Did you invent this? It's fantastic. Lots of people misunderstand electricity as just "tiny little balls colliding with other balls", or think that the electrons themselves must be zooming around the circuit, rather than the wave they participate in.
"Electron gas" sounds right to my ears for these simple analogies. Just like sound oscillates, but still moves from speaker to ear, so too does AC current oscillate, but the energy has a single direction.
Sound behaves about the same if you entrap it inside a tube. The largest difference is that the electron gas is almost completely incompressible.