You have WAY (WAAAAAY) more knowledge and experience with this topic than I do, so I'm not gonna be foolish enough to argue with you, but I'd at least like to clarify and support my viewpoint.
Firstly, to me, it seems like a ridiculous policy for interviewers not to have read my application before my interview. Obviously I described my biggest relevant accomplishments in the AMCAS experience / awards section, and obviously I described a ton of the most meaningful aspects of who I am in my personal statement essay in my AMCAS application, and obviously I wrote about whatever additional topics are considered important to each specific school when I answered their secondary application's essay questions. So it's incredibly redundant and uninteresting to have to re-tell most of the info that I already provided. To me, a closed-file interview screams out that this is a school which goes out of its way to make things more complicated and difficult than it needs to be. The interview should be about communicating the stuff that can't be communicated in writing, like rapport, conversational skills, level of excitement about what I've done and what I hope to do in the future, etc.
Secondly, especially in a closed-file interview, the onus is on the interviewer to provide good questions that allow me to discuss things that aren't already provided in my application. Asking a question like "Tell me about yourself" is insanely inappropriate for a closed-file interview, because the main parts of the answer to that question I've already provided to you in my application. So now I'm in the position where I have to either re-describe most of what's already in your school's hands in my app, or I have to basically disregard your question and respond with an answer that doesn't really offer the best response to that particular question but does provide info that's not already in my app. The onus is on the interviewer to ask interesting jumping-off questions that allow us to easily avoid repeating stuff that's already on our app.
Thirdly, in the specific interview I'm thinking of where I was given this type of question, it was officially an open file interview. So my interviewer had absolutely no justification in asking that type of basic-info kind of question. It smacks of pure laziness on his part and complete disinterest in his job, perhaps even bordering on disdain.
Fourthly, whether it's closed or open file, the questions the interviewer asks should be interesting. I've spent a tremendous amount of time and effort making my application interesting to read, so it shows a complete lack of respect to then ask me uninteresting unoriginal questions. Again, if the school's interviewer can't be bothered to take the time to come up with some interesting unique questions for us to talk about, then that shows that the school doesn't care about making things interesting for its students, and I don't want to go to a school like that.
I could go on, but I've probably already crossed the threshold into too-long of a response. Bottom line: the interview is one of the few times that an applicant gets to sample what it would really be like to really be a student at that school. So if the school isn't putting in the effort to make sure the interview is an interesting experience, then that's probably the same low level of effort they'll put into making sure your education is an interesting experience. And I don't want to go to a school like that.