Lenin was an amazing person; in the modern era there haven’t been many like him, and they’re almost all universally destructive.
I think the best example of this is how the Revolution started: Lenin had been in exile in Germany, kept under wraps, barred from returning to Russia. Towards the end of the Great War, a desperate Germany released him to Russia.
However, they didn’t just “release him”. They negotiated with the Swiss, put him in a train car, sealed it, and had the train run the length of Germany before being opened again. They treated him like an active biological agent, a vicious infection vector, because he was. The Revolution was a movement prior to Lenin’s arrival, but one among many; he successfully executed a coup and overthrew the government within six months. Within a year communists inside and especially outside Russia were already decrying his dictatorship and lack of democratic institutions as a betrayal.
He was an utterly committed, brutal man of one goal, with morals and ethics – even Marxism itself – pushed aside to achieve that goal. It’s amazing what he was able to accomplish, and how almost inevitable it all seems given his reputation among his enemies and allies.