Theory: perhaps the letters do not have phonemic content?

[Jorge_Stolfi]

Secondly, if it were a language, the statistics would tell us so. And according to them, Voynichese cannot be a pure language in itself. To be honest, I don't know how supporters of this theory explain the statistical features.

In my view, the statistics are all compatible with plaintext in a natural language.  Just not the "usual suspects".

In fact, the "hoax" and "cipher" theories must assume either really good luck or improbable linguistic knowledge by the Author in order to justify why the method used happened to generate a text with so many "natural" features.

All the best, --stolfi