We can speculate all day what the scribe(s) intentions were or how they would've approached creating a hoax. We cannot know for sure.
The fact of the matter is there's no apparent grammar in Voynichese, the prefix-suffixes rules are haphazardly ignored every now and then, and AFAIK it's the only manuscript of its time (that we know of) that would've used such an unusual/anachronistic cipher to encode a whole book. Matching plants and labels have yielded basically nothing in terms of decipherment.
Although it could be a cipher or a conlang, there's kind of enough evidence that points to gibberish as well.
The fact of the matter is there's no apparent grammar in Voynichese, the prefix-suffixes rules are haphazardly ignored every now and then, and AFAIK it's the only manuscript of its time (that we know of) that would've used such an unusual/anachronistic cipher to encode a whole book. Matching plants and labels have yielded basically nothing in terms of decipherment.
Although it could be a cipher or a conlang, there's kind of enough evidence that points to gibberish as well.