Armstrong's proposal reminds me a bit of Emacs extensions. Since Emacs Lisp doesn't have namespaces or modules, all functions must be uniquely named which is done by prefixing them: foo-replace. This is not that different from having a module foo, as Armstrong notes: "managing a namespace with namees like foo.bar.baz.z is just as complex as managing a namespace with names like foo_bar_baz_z".

But what it enabled is an Emacs community where single functions are freely shared, for example on http://www.emacswiki.org/emacs/. People just copy them into their Emacs init file. Sometimes they modify them a little and post them again with their own prefix. This has obvious downsides such as lack of versioning and organization. But it provides a low barrier to entry and creates a dynamic community.