A 27-year-old AI researcher shot to fame after speaking out against AI's threat to humanity. Was it a smart career move?

A stock image of a software engineer at work; it does not depict Jacob Coxon. Deagreez/Getty Images Quitting Anthropic may have made Jacob Coxon one of AI's hottest free agents. A viral warning can turn a little-known researcher into a public name. His options: joining another lab, building a…