Voynichese's letters

[ololololo]

but there is still no reason why this is not a „simple substitution“

The letter ordering makes it extremely unlikely to be simple substitution for any language that does not have fairly rigid letter ordering. It is possible, of course, that someone will provide a representation of a language ameniable to Voynichese's peculiar ordering, but thus far nothing

It is worth adding that versions of some exotic language are usually either too speculative or rather contradictory.