John Toohig stood at a podium as the moderator of a panel about home equity lines of credit (HELOCs) and asked an illustrative question of the audience of mortgage professionals. “How many of you have a mortgage first lien, 30-year with a 4% coupon or lower?” A majority raised their hands. “You are all the problem,” he said, garnering a ruckus of laughter. His point was ostensibly about...