Probably the saddest singles ad I have ever seen is the one now being disseminated by a public-radio food show desperately seeking “gastrosexuals.” Not only is it queasy-making, like watching Wallis Simpson cougaring Prince Harry. But can the producers really believe this Sunday Styles nonsense is what will attract younger listeners to Art Linkletter in the kitchen in the age of Vimeo? Viagra as secret seasoning might be a better bet.