This hasn't really been true in my experience. It's one component, definitely, but in general people are also looking to get a sense of how you handle yourself

This hasn't really been true in my experience. It's one component, definitely, but in general people are also looking to get a sense of how you handle yourself and communicate when you're stuck on something. Most people will agree that the point of interviews isn't to get the right answer, but to show that you can reason about problems and communicate well.