Yesterday, Howard Kurtz wrote a sad-sack column about the death of the legitimate entertainment critic. “It can be revealing to find out what people like you, uncredentialed as they may be, think about the new Meryl Streep movie, Philip Roth novel or noodle joint down the street. But why does that supplant the need for full-time reviewers?” Kurtz’s column follows hot on the heels of a smiley-weepy piece by A.O. Scott in the New York Times, entitled “A Critic’s Place, Thumbs And All.” His conclusion is that arts criticism will always be around, since “The future of criticism is the...