Nazism’s victory rendered Horkheimer’s pre-1933 jottings obsolete

Evidence

This book is obsolete. The thoughts it contains are occasional jottings made in Germany between 1926 and 1931… Again and again, they refer critically to the concepts metaphysics', character’, morality', personality’, and `human value’, in the way that these were valid at this period of capitalism. … Since they belong to the period before the final victory of Nazism, they refer to a world which is today already out of date. Problems such as Social-Democratic cultural policy, or bourgeois literature which sympathizes with the revolution, or the academic embellishment of Marxism produced an intellectual atmosphere which has now disappeared. — Rolf Wiggershaus, The Frankfurt School, 511