Both authors began as committed Enlightenment supporters before turning critical.

Evidence

Both had at one time been enthusiastic supporters of enlightenment. Horkheimer had endorsed the French Enlightenment as exposing social hypocrisy and injustice, while Adorno had endorsed the idea of clarifying and elucidating everything instinctual, obscure, insensate and subconscious. Both of them had endorsed Marx’s clarification of the socio-economic preconditions for human emancipation. — Rolf Wiggershaus, The Frankfurt School, 349

Categorization

• XREF: connects to: Dialectic of Enlightenment became more negativistic than its authors originally planned. — Rolf Wiggershaus, The Frankfurt School: Its History,…, 1341; Eastern scholars initially respected or ignored orientalists and only later grew critical.; Nietzsche and critical theory both recognised enlightenment’s self-reversal into its opposite. — Dirk Braunstein, Adorno’s Critique of Political Economy, 914
• yield-rescued: below the book’s yield-target cutoff, included anyway for connecting to: Dialectic of Enlightenment became more negativistic than its authors originally planned. — Rolf Wiggershaus, The Frankfurt School: Its History,…, 1341; Eastern scholars initially respected or ignored orientalists and only later grew critical.; Nietzsche and critical theory both recognised enlightenment’s self-reversal into its opposite. — Dirk Braunstein, Adorno’s Critique of Political Economy, 914