How perfect is Voynichese?

[ololololo]

CENO OUY AEKM A AEIKMST EENV A EILMPS AEHPRS ACN EGT ADEHRR ADN ADEHRR OT ADER, EEHORVW IHTW EMOS ACEIPRT ABEMY HIST ILLW KORW

I recall a claim that, if one scrambles the letters of every word in an English text, keeping only the first and last one fixed, people will still read most of the words at almost normal speed -- and often not even notice that a word is spelled worng.

Your text only takes the scrambling a little bit further, so it is a little bit harder to read...

All the best, --stolfi

Exactly
It is worth noting that if you combine anagrams with substitution, you will get a fairly secure cipher, no worse than a one-time pad... 
Anagrams blur the statistics, making it impossible to detect substitution. If letters are encrypted with numbers, and numbers are encrypted with other symbols, the resulting anagrams will be completely unanalyzable.
There are other tricks to make the simplest anagrams more difficult. One of them is to blur the boundaries between letters in the word itself (daiin - d-a-i-i-n, d-a-iin, da-iin, d-ai-in, etc.). 
In any case, I believe that the text would have been transcribed manually, and the computer would not have been able to help us.