Separately, we should live in a world better than using people so explicitly.

That would be great... but it's wishful thinking.

The Achilles heel of the libertarian left has always been realpolitik - that's just what the historical record shows. All historical "cells of resistance" - from the Iga and Koga province rebellions in medieval Japan to modern-day Exarcheia in Greece - only existed thanks to political chaos caused by power vacuums. Once the political chaos became stabilised, their days were numbered. Therefore, it stands to reason that the only way to secure the future of such a "cell of resistance" is to ensure the political chaos does not subside.

There is only one way I can see of accomplishing that, and that is to ensure there are plenty of enemies around to play off against each other.

It's a very tall order, to be sure - but not nearly as tall as simply hoping that the status quo meekly accepts the existential threat you pose to it's existence once it re-establishes itself.