The 'Chinese' Theory: For and Against

[ReneZ]

I've no idea if my anecdotal story is of any use, but when I married my Thai wife 40 years ago she helped me with my spoken and written Thai (and she still reminds me I'm not very good). One thing she noted was that in my early attempts my writing looked like school attempts - especially with copied round forms rather than confident native strokes. Might there be a contrast between experienced and inexperienced Voynich scribes Here?

I think this is a good point. Initially, one is not writing but 'drawing characters'. It takes a while, and continuous practice, to change that.
So how long would this have taken the Voynich MS scribe(s)? 
Interestingly, we have a data point for that.
Anyone who has seen the 2009 Austrian documentary will know that there was an actor writing Voynichese on parchment. While he wrote slowly, the character forms were good.
This role was played by Gordon Rugg, and he had practiced the script, but not for any excessive amount of time. The Voynich script is (apparently) easy to learn to write fluently, rather quickly.