I would be a little careful calling all these things narcissism, though. Narcissist personality disorder is a real thing, and people have no control over that. The harm these people cause to other people is not a result of mental illness, but as you said, a series of systems that discourage treating people like people and more like commodities.
yes that is true. i should not have used their language. it's dangerously and concerningly imprecise (for instance, as you're saying, most of the bourgeoisie do not view themselves as the only independent beings- far from it, many of them actively take advantage of their understanding of how independent and decision-making other individuals are. it's more so that they are apathetic to other's problems)
i'll say that a lot of what they describe as narcissism sounds like it describes a masking autistic person (albeit in most of their writings, a very negative view of one). the confusion about what stuff like love is actually "supposed" to feel like, the feeling of needing to empathize by connecting with one's emotions and not just going through a social script. Missing, rather distinctly from this profile is the intense internalized sense of justice most autistic people have; a trait TLP seems to think is either at odds with narcissism or part of it? i can't tell. As far as I CAN tell they seem to think having an internalized sense of morality requires the acknowledgement objective morality AKA some sort of god-morality which seems silly. This is supported by the fact that they seem to also have a negative view of people who have an internal sense of morality but... idk... only sometimes????