“High end” was meant as shorthand for FAANG …high comp, not necessarily high tech complexity.

You are correct about the deficiencies of the whiteboard interview. It is not a sane way to hire an individual. It makes sense as a way to hire someone in the top 20% from a large unfiltered pool. So wrt high/low, that’s what FAANG companies have to do, and for many nontechnical companies they outsource this work or emulate FAANG practices for no good reason.

My point was that there are very few places that don’t do this.