Unfortunately, that type of experience is becoming more and more common, and that speaks to the interviewers and their lack of understanding of the whys of the systems design interview process itself...

I suppose this is one more sad byproduct of the title/level-inflation or skill-dilution that has been happening across industry, as well as the 'gamification' of the interview process on both sides.

Some interviewers can also end up being lazy as well.