As an interviewer, I've been in this situation. I hate interviewing other people and felt really guilty about it, but I didn't have control over what I asked. I've also been in situations where I wouldn't be able to answer the questions I'm asking if I hadn't just learned or reviewed them for the sake of interviewing itself. It's so stupid.

I wonder if I would. I joined my current employer "through the back door" so to speak, that is, without the interview or the 5+ years of experience they asked (as an apprentice) and have been taking technical interviews ever since. But am I actually competent enough?

I mean I've been working there for nearly 8 years now and haven't gotten fired yet so it should be alright. But still. [/impostor syndrome]

And given the possibility some interviewers experiencing their own imposter syndrome, around being qualified to assess qualifications, perhaps that could explain some of the questions too.

But the interviewee is just a cog in the machine. Maybe it's unreasonable to require these people too are top notch at their game.