Abdullah Öcalan was a centralist Marxist-Leninist until he read Murray Bookchin’s work, which was sent to him by feminist supporters. He only changed the idea of what Kurdistan could be about 20-25 years ago.
As for “communistic systems”, the centralised vs decentralised argument has been going on since the beginning, nearly 200 years ago. The end point of Communism is a decentralised stateless society, even in Marxist-Leninist theory although they show no interest in actually making it happen. The only difference is that the anarchists and libertarian socialists think that decentralisation should happen as soon as possible, while the state communists think it should be a more gradual process.
Decentralists do look at tribal structures as potential examples of proto-communism, but it is not an uncritical view as there are many things that would be undesirable in a forward looking socialist society.
