NPCs are not soulless automatons

NPCs are egregore-controlled humans, they still have an independent mind but their mind is enslaved and used as a tool for expressing the egregore mind, like a two-way radio channel.
see https://en.wikipedia.org/wiki/Egregore
Its possible to disrupt the link to egregore by subversive thought insertion(aka memes), allowing the original mind to assert its will and independent thought. The egregore can't focus on multiple mental challenges simultaneously and the "radio channel" has limited capacity.
NPCs can be reformed to PCs.

https://en.wikipedia.org/wiki/Bicameralism_(psychology)
Bicameralism (the condition of being divided into "two-chambers") is a radical hypothesis in psychology that argues that the human mind once operated in a state in which cognitive functions were divided between one part of the brain which appears to be "speaking", and a second part which listens and obeys — a bicameral mind. The term was coined by Julian Jaynes, who presented the idea in his 1976 book The Origin of Consciousness in the Breakdown of the Bicameral Mind,[1] wherein he made the case that a bicameral mentality was the normal and ubiquitous state of the human mind as recently as 3,000 years ago, near the end of the Mediterranean bronze age.