Let's separate an idea from implementation. It really depends from how to conduct such interviews. A good example is Google and Bolt. Both use it but differently. And for me personally in both companies it showed clearly all my shortcomings. Even when I known how to solve the task in the best way and wrote code on a board which you can compile. And to be honest I have the same shortcomings when I solve problems bigger or harder. You know, unlike many others this experience was clear and useful for me. It needs practice but I like it.
