Some have been scurrying to amass a nest egg and become self-sufficient. Of course, if demand destruction from the hollowing out of labor happens fast enough, who will consume and keep these stock prices up? With the tax base simultaneously crashing, gov't can't step in and prop things up. It could help during the transition while failing as a long-term strategy but what else can you do?
The rest of that quote is about the timeline where everything turns out perfectly but everyone is quote and unquote useless. That is not the only timeline. The timeline where the AI Ghouls get their way and oppress everyone else is covered in the first paragraph. This is to illustrate that the only ill-effects to my mind are exactly that: the humans who are are trying to oppress other humans. I don’t care if the machines make me jobless in itself. I have no psychological qualms with that.
So how do you plan to maintain food, clothing and shelter when you have no leverage?