Of course it is.
On a lot of levels.
First, the idea that Communism is good in theory, but poor in practice. This is the fallacy of the mind/body dichotomy. It is a throw back to Plato and Aristotle. It comes from the idea that there is a perfect example of reality out there somewhere, but when we fallible humans try to interact with it, or imitate it, we must fail because we are imperfect, or afflicted by the original sin or whatever.
The truth is, a theory that does not work in the real world is invalid.
Second, Communism is a species of the genus Socialism. The original egalitarian Socialists did not imagine that the State, the institution that has a monopoly on the legal use of violence and force, would compel people to practice communal socialism. They imagined that it would be voluntary. That people would choose to form cooperative communities, much in the same way that people establish clubs or churches. It was the Communists who suggested that the idea should be forced upon people by violent revolution.
And finally, they believed that it would work because they denied that human beings have a reasoning self interested nature. They believed instead that human beings are mindless clusters of synapses and gland squirtings that can be conditioned to behave a certain way, sort of like Skinner rats. They figured if they could have a couple of generations in order to condition the masses, they would have succeeded. This strategy included murdering people who simply, according to their true human nature, chose not to cooperate.
And it still didn’t work. People always eventually rebel against capricious tyranny.