Leninism is not the same as Marxism
That's literally what I just said.
The primary advancements of Leninism are the following:
You forget to add "Assassinating the soviet leadership because they defeated the bolsheviks in a fair election, and that was unacceptable to Lenin; and then replacing the dead soviets with bolshevik stooges while appropriating the term "Soviet."
Oh and betraying the anarchists and other groups who supported them during the revolution.
Oh and highly centralized and controlling surveillance state apparatus, and making the so-called "dictatorship of the proletariat" a permanent fixture rather than a transitional government.
Marxism-Leninism
It's Marxist-Leninism, not "Marxism-Leninism." You might want to get your own label right before trying to school people on the internet about it.
In the modern era, the number of Marxists that reject Lenin are incredibly fringe.
Someone's never read Merleau-Ponty, and it shows...