https://marginalrevolution.com/marginalrevolution/2017/10/pi...
And then later similar claims about inequality were similarly made using bad methodology (data).
https://marginalrevolution.com/marginalrevolution/2023/12/th...
[1] "Indeed, in some cases, Sutch argues that it has risen more than Piketty claims. Sutch is rather a journeyman of economic history upset not about Piketty’s conclusions but about the methods Piketty used to reach those conclusions."