https://takingnotenow.blogspot.com/2007/12/critique-of-zettelksten.html
Manfred Kuehn looks at Karl Kraus' criticism of the idea of a zettelkasten as a tool which can be misused.
Of course this begs the question of what one is using their index card catalog for? Are you using it as a rhetorical thinking and creation device or simply a second memory?