It’s more that the user you replied to made a strawman of Marxist socialism.

First of all, “true” communism isn’t a thing, there’s no such thing as a pure system and to think of purity as a requirement is to make the perfect wonderland in out heads the enemy of flawed but real progressive movements.

Second of all, administration isn’t inherently corrupting, nor is it impossible to have democracy and recall elections in case of bad actors, like socialist states have.

Finally, the Marxist conception of communism, as a post-socialist system, can only be global, as class is only abolished when all property is collectivized and planned. A small-scale society cannot be “stateless” in the Marxist sense (though anarchism can exist, it uses different definitions of the state).