No centralized, planned economy has ever outperformed a free market, capitalist one. Ever.
You are correct.
Karl Marx predicted and directly addressed this about 150 years ago.
He said that capitalist societies will always be able to have greater productivity than communist ones.
He also said that productivity was not the best measure of a society.
He also pointed out that slave economies are very good at making some people very rich, but that does not make it OK.
He drew a parallel between chattel slavery in the Americas and factory workers' wage slavery. (keep in mind this was 1800's)
At what cost do we seek productivity? What tradeoffs should society make between the productivity of unencumbered capitalist societies and basic human treatment of the working classes? What is the tradeoff in freedom for the wealthy and freedom for working classes? That is, people at the bottom who work hand to mouth aren't really free, especially if they cannot grow their own food or emigrate
Well, again, Marx's experience was mid-19th century British factory system, and with how The Enclosure made otherwise free people into virtual slaves. I think his observations of that time were true, but we don't do things that way anymore, or not so much.
For most people, workers in unfettered 19th century capitalism have lives much like workers in the 20th century "communist" countries.
OK, well there was never anything like 19th century child labor in the Soviet states, but otherwise it's close in most ways.
In Marx's time, it was common practice that workers who showed up late were beaten, thugs were sent to bring in workers who didn't show, and they would be locked in the factory until the days expected production was done. Also, in many places you had to have a permit to work or live in an area, so leaving wasn't much of an option either.
So in the modern world, we have a middle road.
Private ownership of production as in capitalism, but socialist in that the government makes rules for worker protection, environmental protection, and a social safety net.
So, back to the original post.
The planned economy advocated by the article in order to be stable would have to lay down a combination of 19th century "do what we say or starve" with the Soviet's "we only produce what we think you need".
Only now it would be MBA's and the kind of people that wrote SAP that would be guiding the future.
Marx also said at one time that the only country that he thought would be able to have true communism was the United States. So much for his ability to make predictions.