Boycott and protest the boycotters and tell them why. Ask for refunds from these companies. Tell them they are acting stupidly and wrongly, which they are. These companies must be headed by a bunch of Marxist ideologues or by useful idiots or both. Tell Udis that you and your family will be Udi-free.
Good idea. Though I must admit I've never bought a gluten-free product, and never will.
In fact when my spouse and I go grocery shopping we try to find products that have EXTRA gluten in them. And we're both healthy as can be.