AI is just capital, you said it yourself. AI just adds more capital to the capital + labor = more capital equation. The more value capital brings in comparison to labor, the more value capital takes from the result compared to labor.

The issue is the increasing imbalance of capital being overvalued compared to labor, and how that has a negative impact on most individuals.

I guess pizza is saying that labor (in the sense of human labor/employment) is coming to an end. If AI + robotics just drives the economy capital self multiplies with out labor.