I haven’t read all of these, but I have read a good deal of Marx/Engles, and am working through Das Kapital currently.
I have written similar comments to this, going over the history of thought. It’s important, and not something to be taken lightly (though there is a fine line between being thorough and gishgalloping, especially in the context of forums like lemmy/reddit/etc.)
Maybe you’re of the view that communism is such a loaded word that trying to define it in just a few dozen or hundred words is a pointless exercise. That’s fine, but if the word is so loaded and complicated, you probably shouldn’t be attaching it to nation-states to try to succinctly describe part of their economic system. The only people you’d be transmitting information to are the people who have the dozen or so required readings under their belt to truly grasp what you meant by communism. At this point, the word provides no value.
No economic system can actually be totally described by a single word, ever. However, a single word can be used to describe a part of a system, and it can be used in a reliable way. I pointed to very common definitions of the words, ones you seem to disagree with, and even in the ~thousand or so words you wrote you didn’t provide clear alternative definitions. That signals to me you probably need tens of thousands of words to properly define what you mean by the word “communism”, and at that point the utility of the word is just completely lost.