I found another "poxleber"

[ololololo]

That would apply only to the two words in Voynichese, which presumably were spared by the spill and wipe-off. The rest is in a very different hand. AFAIK we cannot tell about the ink and quill from the images that we have.

When I talk about similarity, I mean the following (I think it’s clear what the green and red arrows mean. The blue one is a partial similarity):
   
Even if it’s not the same hand, the handwriting itself is somewhat similar. The same color, the same fine lines of the letters.

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I suppose it is AI that translates it for you so? Or are you an expert in medieval German?

I don’t understand the dropout . 
I only read the information from the forum. I don’t use AI in this regard.
Here’s a quote from Koen G’s post:

1550 ca., Nürnberg. Several attestations in carnival plays by Hans Sachs. Found in the Fastnachtspiel (carnival play) Der Bauer im Fegefeuer (1552). Expressions:
- "schendt sie pox leber und lung!" May God's liver and lung harm her!