You can’t prove something that hasn’t existed.

Putting theory into practice is literally what Materialism is. Thanks for confirming that you're the one lacking Materialist position in this argument.

You’re not making any sort of analysis, just sticking your head in the sand and pretending that primitive anarchism is the same as modern anarchism, and moreover are taking a mystical approach, rather than a practical approach.

That's literally the opposite of the facts. I'm advocating for an approach based on a theory that has been successfully put into practice and has demonstrated results. You are the one who is sticking your head in the sand and talking about some hypotheticals that have never been tested or put into practice. You need to learn what Materialism is if you're going to keep using this word.