I’d be unsurprised if an interviewer who thinks that trivia isn’t a goofy waste of time also believes that young people don’t have real world skills. But a good interviewer would probably spend time getting to know the candidate’s character.
Something I’ve learned from years of mentoring teens and raising kids is that there are qualities you cannot teach, and they’re enormously more valuable than any technical skills. I’m confident I can teach just about anyone any of the skills Microsoft employees find themselves milling away at. But I can’t teach that fire a 10th grader has where they go home and spend their entire weekend figuring out how to make their idea work in Java, even though they barely understand programming, and then swarm you at the door next week to proudly show it.
That’s the kind of quality you seek to find in an interview. All the other stuff can be taught to anyone.