basically every single human community pre-agriculture

Are you talking about communities before Marx even existed? And I have no problem for people who decide to live in communes, the problem is when they want to force everyone to live under the "rules" of that communist/socialist ideology.

most every example of capitalism is also applied with totalitarianism

There is a big difference. In a capitalist country, people are free to create their own communities or communes and live there with their communist ideals. But in a socialist/communist country (and I say country not little communities like The Rainbow Gatherings) it would be impossible for a group of people to create their own free market community, with private property and a price system based on supply and demand.

In America (and pretty much every "capitalist" country) you are free to create your commune, in well known socialists/communists countries like North Korea or Venezuela (where I live) you cannot have a community with a free market system. A commune might be something sustainable in small scale, not in a big scale

why would you assume that it bastardizes some economic/social ideas, and not others

Let's see, I understand a totalitarian government can also accept private property, what I say is that when a government starts a socialist revolution it always ends in disaster. Besides, the most peaceful and prosperous countries on Earth don't have a socialist system, they all have economic freedom and a market closely resembling the "ideal" free market.