Actually, this town has more than enough room for the two of us
He/him or they/them, doesn't matter too much
Marxist-Leninist ☭
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It changes your argument entirely. You claimed Stalin made it up to justify "soviet imperialism," ie that it was an unscientific definition created for the purpose of justifying actions after the fact. The truth, on the other hand, is that analysis of imperialism predated the USSR, and was used to help analyze tsarist Russia's place in the world and wage a successful revolution, because it was a scientific analysis of imperialism.
That's not what Lenin's analysis of imperialism does, though. You're doing the thing where you confidently make a statement easily debunked, which leads me to believe that you either have no concern for accuracy, or instead are deliberately making things up. Roman imperialism was different in form and function to what Marxists recognize as the imperialist stage of capitalism.
Again, no, Lenin developed the Marxist analysis of imperialism in the context of the coming inter-imperialist war (World War I), and the successful analysis of imperialism helped establish socialism. There was no USSR, so you couldn't even accuse Lenin of trying to justify "soviet imperialism," which doesn't exist anyways.
Are you being genuine, or have you made up your mind already and are making things up as you go to justify that? Honest question, because you're doubling and tripling down on this.