I hated them in college. The worst (and laziest) ones were introducing ourselves and something like “tell us the worst thing you’ve eaten” and then the professor would go student by student. By the time they got to me my anxiety and stress had built so much I could barely get a word out. There’s like thousands of other ways to do ice breakers that are better for stutterers, and are more fun for everyone, if the professor puts just a little thought into it.