ACCESSORY BOXES NO FURTHER A MYSTERY

Why is "de la" used in "Je n'aime pas de la fiction" as an alternative to just de? This is often from Duolingo. I would have imagined just de is accurateGoldman Sachs is not really furnishing any money, financial, lawful, accounting, or tax assistance or recommendations in this podcast. The information contained On this podcast isn't going to repre