The bigger problem is the inconsistency amongst interviewers when judging candidates. All these articles from TripleByte and Gayle (who've built business on the flaws of interviewing) focus on the questions instead. Doesn't matter how hard the question is if the interviewer knows what they're looking for, are experienced enough, show no nepotism and have good communication skills.

My worst interview ever was with Facebook when a non-native, new college grad gave me a Leetcode hard problem in half-broken english and went back to his work without even looking up or walking with me through the problem.