Stalin, by his own admission, added very, very little to Marxism-Leninism. Marxism-Leninism is, at its core, laid out by Marx and Lenin. If you mean any retrospective analysis is "post-hoc justification," then this is absurd as retrospection must be post-hoc. If you mean most arguments in general are post-hoc, then you're ignoring the core of Marxism-Leninism that predates socialist states.

I've been arguing in good faith the entire time, asking you over and over for actual arguments and reading, and you respond with insult. Are you aware of how this presents to onlookers? Do you think you're winning over others?