Why did communism always turn into a kind of dictatorship?
Afaik this happened with every single instance of a communist country. Communism seems like a pretty good idea on the surface, but then why does it always become autocratic?
The myth that Capitalism is immune to dictatorships was Cold War propaganda. Capitalism actually shows just how good a well established Democracy works to prevent Dictatorship. Because the defining trait of Capitalism is to concentrate wealth in the most efficient manner and money often equals political power.
There were plenty of Capitalist dictators during the Cold War and off the top of my head there's still Saudi Arabia with a Monarchy.
The greater the income disparity, the stronger authoritarianism becomes, the more fascistic it becomes. It's always the same, which is why it has to be held in check, something the USA outspokenly do not want to do. Communism, Maoism, Xiism etc. are just taking a shorter route to authoritarianism.