I'm addressing the trait of narcissism not the mental illness of narcissistic personality disorder. Two different things ones a mental illness and the other is being a maladaptive bitch who thinks they're the center of the universe and everyone else is an NPC, I'll give you that musk is definitely mentally fucked by multiple metrics but it ain't ableist to point out that his mental issues are contributing to his political spiral. Just like how my mother's abuse was made worse by her bipolar swings Musks Nazi tendencies were caused by his maladaptions and accelerated by his addiction.
Analysis requires acknowledgement of all factors and guess what to analyze Musk you have to factor in his mental instability. Mental illness often times often times works as an acceleratent for negative tendencies I know this from personal experience, both with my mother and my own issues since PTSD and autism is a right volatile mix.
Regardless I don't feel like there's any point in being not ableist to Musk, it'd probably piss him off. Treat him like the depressed little shit stain he is, maybe we will get lucky and he'll decide to air out his skull with a 12 gauge slug.