I agree with many parts of your comment. I have been in interviews where the interviewers themselves clearly had no fundamental understanding of the problem or solution. To be clear, I didn't either, but asking clarifying questions got me nowhere.

> Now, you don't want to fall behind by not making use of a widely-accepted "standard" practice.

Absolutely. I can understand Google asking you to write a k-way distributed sort off the top of your head, but I've had similar questions from an "enterprise gone unicorn" that were clearly still in the "wtf even is cloud" phase.