How would one break a narcissist's spirit?
Well there are many ways to break a narcissist's spirit I would sujest convinceing them to try something they would be poor at. Although this will vary depending on the person ether chess or a souls like (eg dark souls 4) will likely be outside of there abylity set as they are two compleately difrent skillsets. Therefore at least one of them is likely to cause frustration, anger, embarisment, depresion or self hate witch should safishantly forfill your objective to break there spirit. if nether of these examples work try to find something else that they strugle with.
artificial intelligence
I'm not sure I understand what you mean, could you clarify?

If one is to consider artificial intelligence as a way to break a narcissist's spirit, it would be important to know what aspects in particular. Is it the processing of information at scale? Or perhaps a sense of loss that comes when people feel as though they do not understand the world around them anymore like they once did. In this state of mind, it is entirely possible that they would feel dispossessed, therefore increasing their susceptibility to reactionary conservatism and conspiracy theories which tend to thrive in periods of great uncertainty.

In any case, changes that arise due to advances in the development of artificial intelligence and, to a much greater extent, automation, affect all aspects of human societies. How these changes are perceived and which actions are undertaken will vary according to belief systems, cultural and historical contexts, and power systems in place.
functional complexes of information system
Please clarify your intentions. 
What you wrote is inconsistent with what you requested previously.