“Authoritarian communism” is an oxymoron.

The definition of "Authoritarianism" seems to be bound up in the libertarian view of free markets versus unfree governments.

There's a book I like called The People's Republic of Walmart. It describes how much of the Command Economy practiced in the 60s and 70s by "authoritarian" socialist states was picked up and integrated into the corporate model in an effort to improve efficiency of supply chains and reduce the cost of industrial manufacturing. Walmart's vertical integration follows a model that any Socialist government would laud. It just hordes the surplus for shareholders, at the expense of its employment base.

When the Socialists were making cars in Yugoslavia with a highly efficient regional distribution of manufacturing and assembly, it was horrifying infringement on the rights of the business community. When Ford and Nissian picked up on these practices and imported them to the US and Japan, it was The Miracle of Free Market Innovation that delivered huge returns to investors.

Liberals love to cringe and wring their hands when they hear about Lenin's "Dictatorship of the Proletariat". After all, how can we be free if worker's council get to dictate our housing stock or our employment opportunities or our transit corridors or our retail inventory? But they're utterly blaise about living under an economy whose function is dictated by a handful of corporate boards and banking executives making all the same decisions because... freedom?