Jym, the bungles I’ve seen are not at the gun-toting level. More like not being able to answer a question about their interest in the college or how they envision themselves there. Or admitting another college is their #1 choice. Many can’t discuss their work in their proposed major area. Or who are so very nervous, they can’t engage in dialogue. Kids who, from the basic apps, had looked like contenders. This is separate from liking a kid. Again, about match.
And despite the fact that, for several years, the CDS implied an interview was not evaluative, I knew they were being read and considered vital. (Since corrected.)