Voynichese is a numeric cipher?

[ololololo]

It is obviously optimized for being hard to break. Doesn't mean it's complex.

It is worth clarifying the concept of cipher complexity.
A disposable notepad, for example, is not difficult to encrypt and decrypt (if you have the key), but using disposable notepads all the time is impractical because it is difficult.
And if I want to, I can make the substitution a little more complicated. 
This is assuming that the complexity of a cipher is the time it takes to use, encrypt, and decrypt.
But if we take my cipher as an example, it's actually quite easy, as it's based on the principle of substitution and simple number encryption (we don't take into account my failures). But I don't think you can immediately crack even one passage without knowing how it works.
Also, as I said, the cipher can be very complex, to the point where it is either undecipherable (due to a lack of tools on our side or an overly complex algorithm) or produces nonsense (You are not allowed to view links. Register or Login to view.).
I wouldn't dismiss these possibilities and assume that Voynichese is something very ingenious and magnificent, and once we find a clue, we'll immediately crack the entire manuscript.
Considering the specifics of VMS, it's unlikely...