Spanish to English Art/Literary Poetry & Literature lit crit (with political reference)

Hi, I'm having trouble with a sentence used to describe two writers' contrasting views of the (aftermath of the) Mexican Revolution. The author is contrasting the ateneísta Torri with Aguilar Mora, and the way they view/portray the Rev. He says, "Escritor que ama la pintura, A.M. se detiene reverente ante el fusilado. A partir de su Pasión, quiere saberlo todo sobre la Resurrección del Pueblo. Un Torri, que vivió la Revolución, poco quiso averiguar. Para el ateneísta, el fusilamiento es una fantasía mecánica; en Una muerte sencilla...(which is a book by A.M, and thus the point of contrast), es un drama cósmico que cae sobre la salvación de cada campesino."

I am really stumped by the "fantasía mecánica". I can't quite figure out if "fantasía" is being used like "nightmare", and what he means by "mecánica" (ie if it's an age of technological advance? if it's ... I just don't know. For now, I have "A writer who loves painting, Aguilar Mora pauses reverentially before the executed hero. After his Passion, he wants to know everything about the People’s Resurrection. Someone like Torri, who actually lived through the Revolution, had little urge to investigate. For the Ateneísta, execution was a mechanical nightmare; but for Aguilar Mora in Una muerte sencilla, justa, eterna, it’s a cosmic drama about the salvation of every campesino."

Any light that could be shed would be much appreciated! Gracias de antemano.