Whole this might be true, one thing that is missing is the kinds of interviews where the candidate feels like the interviewer didn't make sense or they didn't expect it to be an interview at all at that point as it was supposed to be a chat about the team and whether it was a fit at all in the first place.

It also doesn't cover the case of junior interviewers interviewing more experienced people either by accident or by design.

There are a lot of failure modes that could simply turn into useful conversations with this approach I think.