Yeah. From the interviewer's standpoint, there is no added benefit of having the candidate write code on a whiteboard, as opposed to a computer.

However, a whiteboard certainly can be easier to write anything that is not code on. Like for instance if the candidate chooses to walk the interviewer through a high-level approach, including a graph topology, before actually starting to code.

I know Google started letting candidates choose between laptop and whiteboard a few years back. I suspect others alos have.