What would you NOT LIKE to be the Voynich Manuscripts?

[ReneZ]

So you are saying that those people expressed concurrence with Wilfrid's claim that Bacon was the author?  
(Where?)

Yes, in their writings. Google's AI answer is quite clear on this for Carton and Gilson.

I am sure that D'Imperio mentions this as well (a more reliable source).

As regards Thompson, he was supporting Voynich's research in Dee and Bacon, and there is correspondence between him and Voynich in the Beinecke library, where Thompson indicates that he has found the most likely place from where Dee got the Bacon cipher MS (the library of St.Augustine's Abbey in Canterbury). This even included one MS of which trace has been lost, and which was at least largely in cipher.

Now we can be sure with hindsight that that will not have been the Voynich MS, but he certainly was interested and committed.

When Thompson wrote Wilfrid's obituary, in 1931, he expresses his doubts about the Bacon authorship, possibly influenced by Manly. Now Manly is the first one to strongly challenge the Bacon origin, and this is after Voynich's death.