Hi yet,
There are a lot of threads going on about this, and one of them is mine, so I am interested in your thoughts and answers too.
I don't know how many of the people accused of being narcs would be diagnosed as such, obviously, but in my situation, my ex is so text book on the behaviour side that finding out the diagnosis was like scales falling off my eyes. (Unfortunately my mother has narc behaviour tendencies too, but the difference in her case is quite clearly that she is very capable of love, but just has bad manners and is quite selfish, rather than pathologically off, iyswim). And since I'm quite a scientific and rational person by nature, I looked at what the literature suggested the ex would do after certain events, given his narc tendencies, and LO and behold he did every one of them.
I suppose there are people called narcs here who are like my mum, and a psychologist wouldn't probably find anything majorly wrong.
But I think it is important to respect people who call their relatives and partners narcissistic. Most normal people do not go around accusing people close to them of being narcs, it is usually after years of emotional abuse, gas lighting, justifying etc, that eventually the thread snaps, and the the victim goes on looking for answers, when of course the narc label fits the abuser to a tee. Given the usual history leading up to this point is all about painting a fake picture to confuse the victim, it isn't good for others to then question them about their realisation that the abuser is a narc. Sure, it's not a medical diagnosis, but it is a framework and as such it works very well to understand how to deal with the abuser.
Hope that made sense.