Y'know, this is a fair point for a philosophical conversation.
It's a terrible point in a conversation about deciding how to actually organize society, however. You can't ultimately know what people's intentions are before the fact. How other people who claimed to have the same ideology behaved once they gained power is inherently relevant.
Let's turn this around for a second. Let's say someone comes to you and says "Hitler got fascism totally wrong". It's actually a really great ideology that Hitler violated by doing X, Y, and Z. Would you give this person power in the real world?
What? No! Because hitler got fascism perfectly right, and fascism is a terribly unethical way to organize government.
I meant specifically I am all about anarcho communism, it's happening and working right now in communes all around the world, has worked in the past, and imo is better than massive nation states forced to point nukes at each other on a hair trigger to sustain themselves.
Huh, out of all the potential responses, this is actually the one I wasn't expecting. Mostly because fascism is notoriously poorly defined to the point where experts can't agree on what it actually means. To the point where the wikipedia page on its various definition is quite a lengthy read ( https://en.wikipedia.org/wiki/Definitions_of_fascism ).
While I agree with you on the downsides of the large, powerful nation states, My point was more about the rationality of outsiders to these ideologies. The reaction of "People labeling themselves this way enacted totalitarian governments during large parts of the 20th century, I probably shouldn't give any power to current people labeling themselves this way." are fairly rational.
Might surprise you to learn that communism is working this very day, on communes all across the world. Also, the basic tenants of it have manifested themselves in various civilizations throughout history.