I had plenty of oral exams throughout my education and training. It's interesting to see their resurgence, and easy to understand the appeal. If they can be done rigorously and fairly (no easy thing), then they go much further than multiple can in demonstrating understanding of concepts. But, they are inherently more stressful. I agree with the article that the increased pressure is a feature, not a bug. It's much more real-world for many kinds of knowledge.