Lenin, more like. Marx reckoned it’d all happen more-or-less naturally, others decided it needed a push.

[edit] ok, nuance, yes he advocated movements to replace capitalism with communism, but he’s not the one mainly associated with attempts to bring communism “too early” (too early by Marx’s reckoning of the timeline of capitalism, that is)

One of the OG ones, maybe. It was a quite widespread idea.

The philosophy goes back to him by Deleuze and Guattari via Nick Land, though most lump Marx's thought with the sins of the 20th century.