To what extent should the translation respect the grammar?

[Ruby Novacna]

One of the reasons why the various translations of Voynich were not accepted was that they did not respect the grammar of the proposed language.

This morning I am leafing through the manuscript, listening to a song by Vianney, whose refrain is :
If me to love you, me to hurt
if me to love you
when me to love you, me to hurt
when me to love you. (I hope my translation is close to the moose)


If this text is discovered in a few centuries by cryptologists, what will be their reaction, bad translation, coded message, misidentified language?

What might have been the manuscript author's demands on his grammar?

Are there any known manuscripts in which the grammar is not respected at all?