List of "weird" vords

[oshfdk]

The only way for it to blend in with the text would be to be about the same kind of random as the text, which is very hard to do with a simple algorithm.

Again, this seems more like an assumption than a deduction.

Yes, as I said before, I cannot prove that the scheme you propose won't work. But I can think of no practical way to implement it using the XV century math in a way that would produce the statistical properties of the Voynich MS. If you have in mind any specific method of encoding with fillers, it's possible to test it and see whether it looks similar to Voynichese.