That should be the biggest argument against the rise of tech bro neo feudalism. Feudalism only has a hierarchy of lesser and greater lords that hold a right to ownership of any kind and have a licence to exploit the peasantry, and everyone else is a serf of no relevance or rights of autonomy or ownership.
The only way feudalism can possibly play out is empoverishment of the masses in the long term.
Again, nothing you claim as an “issue with Socialism” actually makes any sense, and is fundamentally idealist. If I was being mean, I would consider it solipsist, but I don’t think you’re going that far. Ultimately, you have a very “vibes-based” view of what you consider “rot,” and that’s why it’s wholly useless for actual materialist analysis. Moreover, China is a Socialist country and as you said has succeeded, not due to Capitalism, but due to following Marxism, the philosophical aspect I already linked an excellent intro to.