Pandemic anxiety and mounting concerns about vaping have helped shift sales of cannabis products. Ben Emerson had never tried cannabis edibles before his birthday in April. He was raised in the Evangelical Presbyterian Church, which he left five years ago, and marijuana was “this thing that I had never really even thought that I was allowed to do,” he said. “And then I’m like, ‘Wait, I can actually make up my own mind about this.’” For his first foray, Mr. Emerson, 38, chose …