This was said a little obnoxiously, but he has a point. Making pants in China takes about three labor hours[1]. Given that about 50% of the cost of pants is the retail/wholesale markup, that leaves $15 to pay for materials, shipping, and labor. It's hard to squeeze a living wage out of that.
[1] https://books.google.com/books?id=unXGqA4st54C&pg=RA2-PT56&l...