I posed the exact same question below. I have the exact same thoughts, and genuinely curious on the process they have.

I'm not that opposed in general to whiteboarding if you feel like you can't assess the candidate. However I do feel that it sometimes feels like credential and experience similar to what you describe in the medical field: if a doctor had 5 years at an inner city hospital, I don't think they would doubt his credentials to the point the want to make him put cell structures on a whiteboard?