I guess I would agree that it doesn't really matter for the scope of this short video but Marx does make a big deal about it in Value, Price, and Profit. Labor is a commodity purchased to begin like raw materials. This is a very important prerequisite to understanding how supply and demand effect the cost of labor and how the price of any commodity (which labor is) always will trend toward the cost of it's production. Which in the case of labor is the cost of the bare minimum of food, water, shelter for human workers to maintain themselves.

Edit: actually it might be in Wage, Labour, and Capital not Value, Price and Profit I can't remember sorry 😅