Why and how the text could be Bavarian

[Jorge_Stolfi]

as your own examples show, regular spelling variation cannot account for Voynichese statistics

I gave those extreme examples only to show how spelling affects the character entropy.

But here is what I think are the actual characters of the Voynichese script:
    {q} {o} {a} {y} {d} {r} {l} {s}   
    {ch} {che} {sh} {she} {ee} {eee}
    {k} {ke} {t} {te} {p} {pe} {f} {fe}
    {ckh} {ckhh} {ckhe} {ckhhe}
    {cth} {cthh} {cthe} {cthhe}
    {cph} {cphh} {cphe} {cphhe}
    {cfh} {cfhh} {cfhe} {cfhhe}
    {n} {in} {iin} {iiin}
    {m} {im} {iim} {iiim}
        {ir} {iir} {iiir}

Except that the circles {o} {y} and maybe {a} may be modifiers for the above, so instead of just {ch} one may have also {cho} and maybe {chy}, and instead of just {che} one have also {cheo} and {chey}, and instead of just {d} one may have also {do} or {dy}, etc.

If one computes the character (or digraph) entropy of Voynichese by counting each of those elements as "one character", one will get a much higher entropy per "character" than if one computes it using EVA letters as the "characters".  Possibly twice as much, or more.

All the best, --stolfi