A possible origin for the EVA "t" glyph?

[JustAnotherTheory]

Conclusions can only be drawn within the framework of the hoax theory — the forger might have seen this cipher, liked it, and then started creating the Voynichese from there...

That would mean that the hoaxer had very good access to such sipher ledgers, which were only very recently digitized by the Vatican library. So I would say that hoax theory as the origin of the VMS glyphs seems very unlikely.