The pragmatic nature of the script

[ReneZ]

I guess you are (also) referring to the pseudo-scripts that were popular from 1300-1500 in Western art.

For this see e.g. You are not allowed to view links. Register or Login to view. , who summarised his work in a small workshop also mentioned in the "acknowledgments" section of the Yale volume. The notion was indeed to impress, or even to create a feeling of humility in the observer, not being able to understand this.
Unlike the fantasy work of the imaginary Aethicus, this is contemporary to the Voynich MS.

It all goes to show that even some of the most obvious assumptions about the Voynich MS should not be taken for granted. It is not at all certain that the intention of the MS was to hide secrets.
All of the following are entirely possible:
- there is no meaning
- the text is a trivial one, or well known from other sources
- it refers to an imaginary "world"

Of course, all examples of pseudo-scripts in paintings are very short.

The earlier examples have not been much explored in the frame of the Voynich MS, at least to my knowledge.
In the middle ages one could apparently learn the names of the people who invented all the know alphabets:
Hebrew, Syriac, Egyptian, Greek, Roman.
Aethicus got his name on the list too:
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