How fast could a scribe write a Voynich like text?

[oshfdk]

It may be possible to separate implausible from plausible, but I think that's about it without some additional data.

Sure, but that's something, no?

Yes, but I still don't see how the speed of the scribe can affect the plausibility of most common theories. It's totally plausible that a hoaxer would spend a year to get relatively modest amount of money in return, if the hoaxer was poor to begin with. Also, criminals are not necessarily very bright, even for white collar crimes. There are literally billions of different scenarios of how the manuscript could have been created, it's possible to exclude some of them as implausible, but still the number of plausible ones is too high to assist in finding out what VMS actually is. And when I say billions, I don't mean this poetically, it's quite easy to list 30+ boolean variables like poor/rich creator, city/rural setting, hoax/genuine product, commercial/personal project, sane/insane author, religious/secular contents, public/secret endeavor, etc. Most of them can be freely combined to create a distinct set of circumstances.