While I’m on the subject of scholastics (I’ve just been listening to a lecture on the subject): had Ken Macleod been so minded, he could have found plenty o material in medieval theology to justify robot religion — perhaps starting with ideas of grace. In Aristotle’s conception, Grace is a form within the soul. That means it’s a shape, a pattern. The material in which it is embedded is irrelevant, just as a pot is a pot whether wooden or ceramic. Grace in silico would not be inferior to Grace in vivo**: robots would be as capable as humans of faith, hope and love.
* bear in mind, this entire concept remains somewhat new and alien to me; I’m almost certainly butchering some carefully-considered principle. In all honesty, I don’t much care.
** Doubtless you could concoct other arguments for robot inferiority, perhaps arguing that they weren’t created directly by good, and so are merely a shadow of a shadow of his Goodness. After all, Christians have plenty of experience justifying racism; justifying discrimination against machines would be an order of magnitude easier.