For people from outside the silicon valley bubble it's entirely incomprehensible that technological development in a capitalist society would bring about a UBI or post-scarcity for the broader population. When have the oligarchs been altruistic in history? The closest to altruism would be the construction of self-aggrandising monuments.

I just don't understand why anyone would think silicon valley oligarchs are more altruistic than the other oligarchs in history? Even if human labour were devalued in future, oligarchs would continue to extract as much as they could out of others. You don't become an oligarchs unless you are already an expert at exploiting others.