This seems more a fantasy than a considered likely outcome. He basically admits that humans will eventually mostly all be out of a job, replaced by AI, but then says (Gemini's summary) that there will be:

"Massive Economic Abundance: Because AI will exponentially grow the total economic pie, overall resource scarcity will diminish. The fundamental challenge shifts from producing wealth to distributing wealth."

So how do we go from everyone out of work, no income to spend on food, or the goods and services that the AI is producing, to "massive economic abundance"?!

It's like the meme:

Step 1: Create AI

Step 2: AI takes all the jobs

Step 3: ???

Step 4: Profit! (massive economic abundance)

What is step 3?

> What is step 3?

"Massive Economic Abundance" implies massive increase in produced goods. This implies massive deflation, ceteris paribus. So step 3 could be simply printing money to pay for UBI. Deflation from AI productivity increase and inflation from UBI money printing will cancel out.