The author of the article confuses productivity with productivity growth (the rate of change in productivity). While productivity growth has generally declined in recent years, the rate of change has been positive. Consequently, productivity itself has continued to increase (albeit at a declining rate).
Another comment provided a link to the St. Louis Fed’s chart of productivity growth, which illustrates this [0].
From skimming the article, it doesn’t appear to address some of the hypothesized causes of this trend, including insufficiency in the definition of productivity to reflect Information Age work and arguments that the internet has less of a multiplier effect on the productivity of labor than other inventions (electricity, combustion engine, etc.)
Another comment provided a link to the St. Louis Fed’s chart of productivity growth, which illustrates this [0].
From skimming the article, it doesn’t appear to address some of the hypothesized causes of this trend, including insufficiency in the definition of productivity to reflect Information Age work and arguments that the internet has less of a multiplier effect on the productivity of labor than other inventions (electricity, combustion engine, etc.)
[0] https://fred.stlouisfed.org/series/MPU4910063