This March, when U.S.-based AI researcher Anand Ahuja launched CTRHero, “an AI to replace Thumbnail Artists,” he called it “his life’s work.” Trained on millions of successful thumbnails from various social media platforms, CTRHero could create thumbnails within minutes, reproducing faces with 99% accuracy, according to Ahuja. The tool outraged designers who felt their livelihoods were suddenly at stake: some threatened Ahuja with physical violence. Soon after its launch, Ahuja sold off the core...