I've never read it but I think Atlas Shrugged might qualify. I don't think I've ever heard anyone praise the plot or talk about it as a novel, instead people who liked it say it changed their life, changed how they view themselves, etc.

I thought it was pretty well paced as a novel until it got to John Galt's big speech which seemed childishly self-indulgent and then after that it goes to hell. The novel is about 1200 pages and it's pretty amazing that it held my attention for the first 800 because I've rarely been able to enjoy a novel for that long.

as a lite-BDSM wish fulfillment romance novel, it's quite compelling. better plotted and written than much successful romantasy today. the whole plot is about a bunch of hot rich guys fighting over who gets to dom the self-insert female protagonist.

there's another fantasy aspect, which is discovering your sense of alienation from family and society is really because you're part of a special but oppressed group and won't admit it to yourself, and once you embrace your identity you can find fulfillment, love, and community.

now, in this case, the repressed identity is "capitalist", which is a peculiar way of looking at the world. but if you ignore this, the emotional beats of the story (finding yourself, coming out, found family) also work for the LGBT experience, even perhaps neurodivergence. I think this is why so many confused teenagers find themselves very moved by the book and are later embarrassed to admit it.

on the whole, it's not high literature but competently executed, the only really stupid thing about it is Objectivism.

I think it appeals to people with toxic "lone wolf" mentality.