Codswallop!
The overriding requirement for space launch is energy density.
It matters little how you generate your energy-efficient fuel, you still tank up with volatile combustibles and light the blue touch paper.
it's cheaper to manufacture fully synthetic kerosene than to build a spaceship big and dumb enough to burn soy-bean oil. Npw you're welcome to have a solar-electric driven plant to manufacture fuel. At its simplest, you can electrolyse water for LOx and LH2.