You absolutely can be classless while still having hierarchy. A manager is not a different class from those under them unless they have a difference in ownership of the means of production and distribution. Secondly, I am not conflating organization and structure with hierarchy, you need all 3. A nuclear power plant without hierarchy is a disaster waiting to happen. Without hierarchy, you cannot coordinate the global logistics to create a smartphone. Horizontalism has regional limitations that run counter to communism and humanity’s march towards collectivization.
You can’t be class-less and hierarchial at the same time, so I’m not sure how you concluded that class society can only be ended by socialism.
Furthermore, you are conflating organization and structure with hierarchy. You do not need hierarchy for administration.
You absolutely can be classless while still having hierarchy. A manager is not a different class from those under them unless they have a difference in ownership of the means of production and distribution. Secondly, I am not conflating organization and structure with hierarchy, you need all 3. A nuclear power plant without hierarchy is a disaster waiting to happen. Without hierarchy, you cannot coordinate the global logistics to create a smartphone. Horizontalism has regional limitations that run counter to communism and humanity’s march towards collectivization.