What Sloterdijk says of censorship one can also read in Horkheimer but also Marcuse and at greater length in an another author Sloterdijk does not name at all: Jacques Ellul who wrote insightfully, if rarely cited on this complex and all-too-present topic, on propaganda.

See among his other books, Ellul’s Propaganda: The Formation of Men’s Attitudes (New York: Knopf, 1965).

These are not cricitisms and Sloterdijk to be sure can answer any criticism raised against him.  His books are designed to do this. 

Add to this the sheer size of Sloterdijk’s intellectual output and it is plain that this abundance, too, shields against critique. 

So, is there anything unshielded? 

No, and yes.