I don't think starship propellant can be made on the moon.
I also don't think it is necessarily easier to manufacture space machines there given the constraints, even if the materials are available. If Starship is fully reusable 100T to orbit for just the cost of the propellant, there is a huge benefit to Earth-based manufacturing in the short to medium term.
I also don't think it is necessarily easier to manufacture space machines there given the constraints, even if the materials are available. If Starship is fully reusable 100T to orbit for just the cost of the propellant, there is a huge benefit to Earth-based manufacturing in the short to medium term.