A new documentary, 'One Last Adventure: The Making of Stranger Things 5,' has sparked fan backlash, with many accusing the Duffer Brothers of using ChatGPT and AI tools in writing the final season's script. Screenshots from the documentary, showing what appear to be ChatGPT tabs open on a laptop, circulated widely on social media. This controversy coincides with existing fan dissatisfaction over the finale's pacing and plot, with some claiming AI use explains perceived shortcomings in the season's conclusion.