A proletarian class that foments a revolution must have a vanguard first, as well as a rearguard. None of Marx’s writings, again, have him specifically speaking against such a formation.
I will agree that Engels in the beginning was for more peaceful transitions, saying in “The Principles of Communism” that “the communists would be the last to oppose” a peaceful abolition of private property (if such a thing were actually possible) and that he foresaw communism “transform(ing) existing society gradually and… be(ing) able to abolish private property only when the means of production are available in sufficient quantity”; but later on, he was saying things like “À la guerre comme à la guerre; we do not promise any freedom or any democracy”.
It’s a folly to characterize the Russian Empire as non-industrialized, to boot; they were not as advanced as the British or German Empires, or of course the USA, but they were absolutely not fully agrarian with the only manufacturing done by guilds and independent freemen; serfdom ended in the middle of the nineteenth century, and by the turn of the twentieth century Russia was actually the world’s leading oil producer. The communist revolution in Russia would not have gotten as far as it did without Germany’s aid (the source of the ideology) anyhow.
With all due respect, try to keep your replies brief. Proof by verbosity (also known as “argumentum verbosium”) is recognized as a logical fallacy.
Except, as previously established in quotes from their writings and speeches, Marx and Engels specified how the Revolution was to be lead by an organic revolt of the masses lead by the masses. They explicitly rejected the Bolshevik concept decades before it even came into existence. Your interpretation is only further validating my point that Marx is simply ignored by the left and everyone else. The left has resorted for a hundred years of, "Well, Marx didn't mean this." "If Marx had known better, he would have said this. "Marx didn't explicitly say otherwise." The modern left is inherently Post-Marxist.
"It’s a folly to characterize the Russian Empire as non-industrialized"
I agree, this is Marx and Lenin's characterization, not my own. Once again, Marx was wrong.