I suspect idolisation by reflection. When Patrick Bateman is one upped socially he turns into a liquidy angry mess, thus serves as a reflection of how some autists feel when they're out of their element socially or emotionally.

...and I think there's something for autistic people to idolize in the fact that he just goes on, regardless of his disassociative breaks from healthy socialisation.

No, he's not a healthy model, but I can understand people feeling something is reflected there.

Of course in actual fact it's satire of the high society side of the 1980s patriarchal finance bros... But post modernism dictates that each individual will have their own interpretations.

Do NOT emulate Bateman's skincare routine, you'll overexfoliate yourself into eczema. I am speaking from experience.