On consonants and vowels in Voynichese

[tavie]

And more on the -sama ending: it's high frequency of usage is mainly due to one Quire, so it's potentially playing a very specific functional role and is not representative of Voynichese as a whole

This is not true.  The balneological quire does go to town on dy but we see high percentages of it elsewhere, particularly by Scribe 3 (under Lisa Fagin Davies's differentiation of the scribes).  Any solution needs to explain this, and why it varies according to scribe and position in the paragraph.

You come to conclusions with a sample size of three glyphs compared to around 35-ish potential string patterns that appear in FSG. Is it worthwhile to jump to conclusions on the value of the entropy without actually calculating it?
By the way, if my approach is right, it might shed light into potential errors in the Manuscript, so I wouldn't jump to conclusions like you did. 

Being defensive isn't going to make people keener to engage with your theory.  Your theory needs to try to account for how predictable those three glyphs (and others) are, and account for the other distinctive Voynichese behaviours that have contradicted all attempts to assign sound values to glyphs.   Otherwise, there's no meaningful difference between it and the hundred other theories.