The issues I see with the term "anarchism" is sort of what I see with "autarchy" and they relate to the recent discussions with Don about the "greatest good debate."
I don't think of myself as some kind of radical reductionist, but I think it's an important point to remember that we are the ones who define words the way we choose. In the case of any generic social term like "autarchy" or "anarchy" we have the problem that there is no single point of reference as to what those words means. It can be useful to use them, just as it is useful at times to talk about the "greatest good" but the problem is that no one gets to dictate to everyone else what the definitions are, and if you're talking with people who aren't on exactly the same page with your own definitions, it's easy to make mistakes as to what we're really talking about.
In that sense it seems to me to be a significant advantage to talk about "Epicurean" or even "Epicureanism" because that term limits the definitions to what Epicurus himself taught. Of course there are all sorts of ambiguities about that, but it's easier to agree that whatever he taught (if we could determine the details) that's what it means to be "Epicurean" -- as opposed to "autarchy" or the like where you always have to stipulate "Who's definition?"