I will never understand why ideas like this - both completely detached from reality and actively harmful to the people who espouse them - have become so popular on Reddit.
It's popular on various front-page(!!!) subreddits like r/antiwork and r/latestagecapitalism.
I say "incel" there very deliberately. It's a set of toxic beliefs that prevents the formation of normal, healthy economic relationships, and this reinforces the toxic beliefs in a positive feedback loop.
I've seen a friend get sucked into this and it was (still is) absolutely devastating.
And it is like you said self fulfilling, where the world makes more sense the less economic success one has, and the narrative provides no moral option to changing one’s economic status within the system.
This is where my friend is right now. It really, really sucks.