How perfect is Voynichese?

[oshfdk]

In fact, I can only demonstrate how it roughly works.
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This is actually a very, very simple example. It is unlikely that you will have difficulty deciphering the second text. But I can complicate it, for example, by adding more meaningless words or meaningless letters (in order to eliminate type ia deformities). In the process, I can create so many internal rules that you, knowing the alphabet but not knowing the rules I use, will never be able to decipher this text.

Thank you, now I understand how the scheme works. Deciphering it can be problematic, but I'm not sure it's as unbreakable as you suggest, especially for a very long text.