So the difference is that the movement of water (i.e. waves) is implied in a Hurricane and that the atmosphere is expanding isn't implied in a geomagnetic storm? So your whole argument is based on our (meaning the general population) limited knowledge about the side effects of geomagnetic storms, while we do know about the side effects of hurricanes.

The nuance isn't that important. The implication that a geomagnetic storm can only cause magnetic/electric damage is just wrong. It's like implying a hurricane can only cause damage through wind and rain.