An opinion writer's suggestion that the next US First Lady Jill Biden should stop referring to herself as "Dr" has sparked an angry reaction online. Joseph Epstein called Jill Biden "kiddo", comparing her doctorate in education to an honorary degree. "'Dr Jill Biden' sounds and feels fraudulent, not to say a touch comic," he wrote in the Wall Street Journal. But social media users argued that the article reflected sexist attitudes faced by many women in academia.