I mostly agree but would push back and/or expand on the philosophy angle.

Ignoring that Plato dominated most philosophical thought for the first millennium AD and that philosophy as a whole is influenced by him, The Matrix doesn't have that much to do with Platonic idealism specifically as it does dualistic world views in general. I would look at Gnostic concepts most of all, with the machine demiurges fighting (via their archons, agents) to keep humans locked in the ontologically inferior world the machines designed while being opposed by aeons (Morpheus, Neo, etc.) trying to bring the knowledge (gnosis) to people.

There's also plenty of references to Baudrillard's theory of simulacra, but I think he himself was correct when he pointed out that it was a bit too overt to capture his ideas meaningfully.