I’m very disappointed in poem_for_your_sprog for almost understanding this point, and then immediately making the same mistake she was calling out
‘I have to sort my books!’ she cried,
With self-indulgent glee;
With senseless,narcissisticpride:
‘I’m just so OCD!’
‘How random, guys!’ I smiled and said,
Then left without a peep -
And washed my hands until they bled,
And cried myself to sleep.

I’m sorry, I thought you were joking. I wasn’t making fun of him at all, merely adding some support to what protist was saying - there’s a difference between saying someone is narcissistic (exhibiting narcissitic personality traits) and saying someone has NPD, or “grandiose narcissism”. I think a small amount of narcissism is probably necessary for maintaining things like self-esteem. Greek mythology is full of some really messed up stories, I think we can both agree on that at least.
Are you aware of the two types of NPD - grandiose and vulnerable?