The origin of Fabrizio Salani's "AG" monagram

[Fabrizio Salani]

Will be the easiest way to check all of W. Voynich‘s friends, neighbours and fans: 
the one named A.G. should be the one who made a copy and sealed it so pompously…

A friend who physically held the codex in his hands for a long time, only to copy it partially (21 of the first 26 pages), not even precisely and modifying the graphics, to send it to whom and for what purpose? We only have evidence of such a thing in the correspondence between Baresch and Kircher, and it is well-founded and proven; no other evidence has been found to date.
I don't know, at the moment, it seems to me a more imaginative and forced hypothesis than the one from 1600.