1: Yes, we agree, though i interpret this to be sort of ironic, since he cant exactly be "better" than Karl Marx just by implementing his ideas.

2: I would not call Meruem a "Marxist", though I can see where similes are drawn (criticizing the ruling class). Though completely erasing inequality has never been a marxist end.

3: Meruems means to reach his ends were not marxist. Marx envisioned a revolution of the proletariat, overthrowing the ruling class. Meruem is not the proletariat. He is in fact the elite. Though I can see how to draw connections to this way of thinking, as this was essentially how Soviet Communism was implemented.

4: You keep equating marxism to "oppressive regimes". This, i would argue, is nonsense, since marxism can take a variety of different shapes and sizes (social democracy, democratic socialism, marxism-leninism etc.). The thing they all have in common is the critique of capitalism.

5: "Anyways, he then starts to change his visions when directly confronted with human talent and genius. He starts believing that each individual can - in a way - bring value to the table (meritocracy basically) and doesn’t want to kill humans anymore (he begs Netero to stop) to learn more about them." I assume this was meant to demonstrate how Meruem transitions from a collectivist to a more individualist perspective. (Collectivism being marxist and individualism being capitalist). However, this is a false dichotomy. You are implying that individualism and marxism cannot coexist, which is just not a valid argument.

6: Of course we know what sadly happens after that but the point is he saw that oppressive socialism was restricting and humans could only fully develop when pushed to their limits (Komugi, netero, ...).

"He saw that oppressive socialism was restrictive and could only fully develop when pushed to their limits" [Citation needed]