Comics

I want to point out that Marxists don't believe Marxism is "inherently correct" or "unable to be challenged." Marxists tend to be confident in the usefulness of Marxism as a tool for analysis because it has proven its handiness. If parts of Marxism were to be proven incorrect, those would be dropped and the new theory adapted. That's the strength of the Dialectical Materialist method of learning, which is similar to the scientific method but built-in to Marxism as a concept. Either way, on to your main comment.

For point 1, you talk about why the concept of ownership of, say, a factory is foreign. Your point misunderstands theirs. The belief in a societal concept of "ownership" is separate from the actual, real world mechanisms at play. What is "morally correct" doesn't guide society, starving people don't refuse to steal bread because of morals. The reasoning behind ownership is punishment by the state for not respecting it.

For your second, it's pretty clear that these contracts heavily benefit the owners of the contracts at the expense of those who don't. You are correct in saying that without the State, the workers would simply take the factories, but this wasn't because "society" decided it, but the owners of Capital in the first place.

Your point on Marxism is a strawman. Marxists believe administration, laws, and government are necessary, but that over time as the economy is publicly owned and planned there will cease to be real class distinctions, and thus the "State," the elements of government that exist purely for class oppression, would wither. Laws would still exist along with public service workers, but would play different roles to how society is run today with heavily millitarized police forces and massive armies between hard borders.

Your next point, the third outlined, is nihilism (and chauvanism towards the end). When presented with the case that holders of Capital have far more power than those without, you sidestep that equation and say any labor is slavery. Instead of grappling with the presented idea of equal ownership and thus more even power dynamics, you choose to not engage at all or even consider it. This is nihilism.

The second part of your third point, the ability to choose where you work, is already a part of Marxist thinking and is in place in Vietnam and the PRC, which you allude isn't possible. Moreover, you make an appeal to democracy while avoiding tackling the imbalance of power between factory owners and workers, a society with equal ownership is inherently more democratic as the voices of the people are more equalized.

Your final point, the "reliance on violence" rather than "hearts and minds" applies more to liberalism than Marxism. In an inherently violent, imbalanced system like Capitalism, the violence is systemic and daily. The appeal to "hearts and minds" is to quell opposition to this daily violence. No Marxist wants violence, but Marxists accept that revolution is necessary to move beyond this industrialized system of violence.

The reality of Liberalism is violence and Imperialism, from murdering 1 million Iraqis for the pursuit of profits to dropping napalm and Agent Orange on the Vietnamese for daring to go against the US-dominated world marketplace to dropping more tons of bombs on Korea than the entire pacific front of World War 2, Liberalism dons the mask of "winning hearts and minds" for its public while slaughtering without care innocents to the tune of millions.

You don't have to reply, but you can feel free to. I have my own criticisms of the comic, the Aliens certainly would have gone through similar economic systems before reaching their current, likely Communist Mode of Production and therefore would understand the Capitalist (unless they failed to write down their history, which is unlikely as well), but I don't think your critique is good either.