Bob's knowledge about war stems entirely from Star Wars. When you take a good look at the Galactic Empire, you see it's
actually impractical from a real world perspective. Their leadership are backbiting nutcases and their technology is easily defeatable. That's because the story needed to create a setting where heroes could do cool heroic things, and so it needed unecessarily nasty villains who could be easily defeatable. No one would want to tune into the story of How the Empire Reasonably Addressed the Grievances of Its Subjects and Thus Continued For Thousands of Years Unabated. No one would care about Luke if he'd come home from Ben Kenobi's to find his Uncle and Aunt captured instead of killed, and Luke wound up swapping the droids in exchange for their freedom and then Luke went back to moisture farming until he could join the academy and become a pilot for the Empire. Because if fictional Empires acted reasonably and logically the way most governments tend to do to an
extent, then it would make for a messy, boring story. It would also be hard to create a story where a small, plucky band of rebels were able to bring down an evil government through a single, decisive action, because most real life totalitarian governments fall through a long, drawn out series of events caused by large, disparate groups acting independently of each other.
So yeah, only morons would base their ideas about how Real Life wars and weapons work on fictional examples. Only a true moron would think that we could make a Real Life Death Star and use it to wipe out all of the people who vote a certain political party. Partly because weapons of mass destruction aren't as foolproof as they first seem, and because any government that uses them against their own population will be treated as a pariah and ganged up on by the rest of the world.