By their analysis, Capitalism doesn't exist either, as central planning and public ownership contradicts Capitalism
The vast majority of megacorporations use some form of central planning. That doesn't make them not capitalism. And of course, public ownership does not contradict capitalism. Public owned things can still do commodity production.
yet the US has a public postal service.
The postal service seems to be a bad example, since it is self funded by people paying to use it. Commodities.
But I can continue this argument with an actual public, non-commodity based service like the fire department. Isn't it frequently stated by the Marxist Lenininsts on this instance that what determines the mode of production is not the presence of these "socialist aspects" or the "capitalist aspects" but rather which one is primary mode of production?
But basically every state in existence primarily does rely commodity production. That would make them all capitalist.
"The path that we are on worked but failed because we were unlucky" is not the same as "IT'S GENOCIDE TIME!!!!"
And for the record, I am a nihilist. I do not believe in free will. I know nihilism is supposed to be some kind of insult, but it's not.