Just to clear up a common misconception, as much as I find what we commonly call “communism” detestable, it is still possible to be a communist and a libertarian. It isn’t communism per se that libertarianism rejects, but rather the forced collectivization of goods and and services into communes.
If a group of people decided that they wanted to voluntarily live in commune where the rule “From each according to his ability, to each according to his need” held sway, I’d have no problem with that. Only confused libertarians would have a problem with it. The only problem with communism is that it requires force to implement. A central authority must come in and confiscate all property to collectivize it. That means the natural state of things is private individual property and communes come in with a central authority to take all property and redistribute it by force.
That usually leads to mass starvation and death, as in Mao’s Great Leap Forward, Pol Pot in Cambodia, Stalin’s rape of Ukraine etc. These examples were all communism enacted by force. There have been no greater examples of mass death than these. But if communism is enacted voluntarily by people who don’t want private property but would rather work for the commune, then it can indeed work.
The classic example is the Israeli Kibbutz. People who want to live there agree to work on a communistic basis, and that’s fine, as long as they don’t force people who want to work for themselves to live there. Kibbutzim are not particularly successful enterprises in terms of amassing wealth, but if the people who live there like them and want to continue doing as they do, then libertarianism has no objection.
The same is true even for murder societies who all agree that if you live within a certain previously homesteaded area, anyone can murder you without warning. That’s fine too, as long as everyone who lives there agrees to the rules. The key is it has to be previously homesteaded. Otherwise property is appropriated by private means and the rules of that property become subject to their owner.
A voluntary communist society wouldn’t lead to much wealth creation, but it sounds attractive to sado-masochists at least, and some people like it. You can’t argue with what makes people happy because it is subjective.
The same is true for collectivism or socialism or whatever. Libertarians are not against team sports, because everyone on the team agrees to work as a collective. Socialism per se is not a problem as long as everyone who has to fund it fully agrees to it. As long as everyone agrees, no problem.
The only thing libertarians object to is the use of force against innocents. There is literally nothing else to it. It is one of the simplest antipolitical philosophies in the world, which is what makes it so prone to error.