| It does not take hours to fuel a rocket, on a Falcon 9, they only start prop loading 35 minutes before launch.
Fair enough, however they specify a payload between 30 and 100 metric tons which is well above the capabilities of a falcon 9 rocket. And to propulsive land that kind of payload you need a big lander with fuel to slow you down and land, eating more into payload capacity. Of course starship could do this and would not require a separate lander but again without any infrastructure you are expending the second stage ignoring the fully reusable specification.
So this could work if military bases were equipped with an orbital launch infrastructure but then you are limited to those bases and you cannot deploy the payload "anywhere within an hour".
Don't get me wrong, I'm all for more support (I'm a big fan of SpaceX) for starship but it has to make sense in some way. It will be interesting what they will come up with though.