I did something interesting the other day. I uploaded a whole bunch of stuff about my grandmother who has passed, including her own writing and letters to me. I had it write a letter to me from my grandma. It was beautiful. It used her style of writing, her passion and compassion, and truly felt like it came from her.
I wouldn't be so certain that within a few years we won't have robots writing passionately with soul, as it replicates human emotion, as well as, writing style. The soul comes from the input, the robot just arranges the words to mean something new. It's a partnership between the prompter and the robot.