Without any studies as backing, my best guess is “Dogs have owners, cats have servents”.

Alternatively: Dog thinks ‘Human gives me food and cleans my poop. Human must be a god!’. Cat thinks ‘Human gives me food and cleans my poop. I must be a god!’

And apparently cats have us psychologically hacked to adore them in multiple ways. Like how their purr is helpful for human stress relief.

Tl;dr I think it’s because cats own you back, and a narcissist would have an easy time hating them for that.