From Graham Harman:
How do you know when the attempt is being made to turn something into a master discourse? When the claim is made that there is nothing outside the master discourse. When the master discourse can supposedly account for everything and its opposite. When the master discourse claims that it has no real enemies, because it actually already agrees with what its enemy is saying. (Deleuze’s attempt to turn Leibniz into Spinoza in Le Pli was an alarming sign even during his lifetime.) Derrida was the former figure on whose behalf this attempt was made, and Deleuze seems to be the new one.