I don't think anyone here advocates for trying to "fix" narcissists.

Not even narcissists.
I do think it's bad form to accuse others of obsessing over narcissistic disorders even while pontificating on the topic ad nauseum oneself.
However: your point being that if one is totes healthy themselves, has no unhealthy thinking patterns or personality disordered tendencies, then they are totally safe from getting into trouble with anyone who does..? That sounds awesome. Unfortunately, I've never met a totally healthy person, the world over, in my many travels and living in a swarming metropolis of 9 million people. I don't think it's a question of who is sick, only how they are sick. Like Bill Hicks once aptly said about humanity, "we're a virus with shoes".
We all have our paths though, that we need to go down along our journeys. I certainly don't begrudge rouge his/hers/theirs (nor you yours)... it's quite another thing to walk into a room or forum though and say "you people all need to XYZ because I know better than you". Imagine if someone went into the Survivors of Abuse forum and said "you all need to stop obsessing about your abuse and get on with your lives". Preposterous, right? One might not survive to make another post after a statement like that. And yet it's the exact same behavior.