If 70-80 percent of jobs disappear, then the number of people who can afford to buy all this stuff -- especially robots -- will be drastically reduced. The AI applications that will replace humans will not be paid, and will not have money to buy stuff.
I'm not sure what happens in that environment, but to my simple human brain, it appears to that the economic disruption would certainly disrupt the timeline suggested in this article.
We are so screwed.
Oh, come on. The government will just give us money, we won’t have to work.