1.) Morningstar is owned by Kelloggs.
2.) Some marketroid at Kelloggs was probably given the task of coming up with a suitably hippieish name for their soy based line.
3.) That marketroid was most likely a carnivore, just going by the average statistics of marketroids that I assembled some years ago.
4.) Morningstar is another name for Lucifer, aka Satan. (aka Seitan, but that's another story.)
QED: Morningstar Farms is some carnivore's idea of a joke about soy-meats.