Please bear with me, I read it a long time ago.
I don’t think there’s any distinction between sentience resulting from organic or digital processes. All organic brains are subject to some manner of stochasticity which determines emergent behavioral properties, and I think the same will be true of digital or hybrid brains.
So if you clone me in digital form, it’s not me anymore—it’s not even my twin, it’s something which was inspired from me, but it’s not me. This is now a distinct individual because of the random processes which govern behavior or personality etc., a different person, so to speak. So I never appreciated why MC felt any attachment or responsibility towards his images, other than perhaps the kindness you’d exhibit towards other persons.
The images, or persons as I’d like to think of them, in the story were shown as sentient. But sentience is only one part of consciousness, and the images in the story Lena seem incapable of self-determination. Or maybe they’re some equivalent of a stunted form of animal consciousness, not human consciousness. Human consciousness is assertive about its right to self-determine by nature of being an apex organism.
But even cows and sheep get mad and murderous when you’re unkind to them. Donkeys will lash out if you’re being a jerk. So I think two things: 1) simply creating an image of behaviors is not creating consciousness, and 2) human consciousness possesses a distinct quality of self-determination.
The main thing I’ve noticed about conscious beings is that they have a will to assert themselves, and those that don’t possess or demonstrate that quality to an appreciable degree in animals or humans are usually physiologically damaged (maybe malnutrition or trauma). I don’t expect consciousness born out of digital processes to be any different.