I feel like there are a few things not noted in the article:

1. The relative economic value of labor has dropped significantly as the developing world has developed and the developed world has seen greater labor participation. Efficiency rose, but so did the supply.

2. The supply of housing has not not kept up as part of the economy, especially low income housing. The lack of housing supply generally drives wages up in economically productive areas, making it so we have to work longer.