Your post was about stress not anxiety and theu are different things. My point is that these these kind interviews approximate what you will actually do at work. If someone finds them stressful then they should think about if this is the career for them. Feeling anxious is another thing, but you can feel anxious while being confident because anxiety is about fearing and unknown outcome.

My point is that people should fine these interview styles stressful and that has always been my point and what I have been replying to since you never brought up anxiety until now.