On a similar note, in one of my previous interviews (will not name the school), I was asked 'rage bait' questions as well. It wasn't this, and was a different question. I don't want to give away the details of the interview because of the confidentiality agreement I signed, but it was about a controversial topic relating to the country I grew up in (as I graduated high school there and it was present in the AMCAS application which the interviewer had in front of them during the interview). For context, an individual from the general American population would have negative views on it.
My interviewer's first question was about this topic, and they proceeded to ask me questions after questions about it for the first ~20 min of the interview. I tried to handle it in a professional way, clearing any misconceptions, and even called out and addressed some false propaganda that is often brought up in US/Western news media about it. I felt my interview went bad and that I was targeted. I was eventually rejected by this university. However, this school offered feedback for rejected interviewees, and at this feedback session, I was told my interview's score was pretty high and that the comments by the interviewer were great! I was rejected for other reasons that they specified to me, which I felt was fair because what they pointed out was indeed the weakest part of my application.
I don't know what happened in the interview, but I'm guessing that they were trying to see how I handle such topics, because honestly, I've had people ask me questions about it too throughout my life (such as the agent at an insurance company when I was looking around for car insurance😂), and even by my peers in the medical school that I am currently attending! Obviously these people asked me in a curious, non-confrontational, and wanting-to-learn kind of way. I too expect my future patients to ask me about it too in small talk if they know my background.
I had no control over the country I was born in and raised in, but it feels like I have a duty to 'explain' myself over something that gives me a negative image which is untrue! But that's what the interviewer in my opinion was trying to see, and so my personal theory is that they wanted to see how do I handle it. Am I professional? How do I handle misinformation? How do I 'explain' myself for something I had no control over but people think I am responsible for but in reality I am not?
I thought I'd give my two cents, and that they were trying to see your thought process and how you handle scenarios which is likely to happen in your future career.