My experience is that you can’t conduct a kind, candidate-centric interview process if your interviewers are tightly time-constrained. Conversely, if an interviewer is unkind to a candidate (and these unkindnesses are typically of the “with a whisper not a bang” variety), I believe it is very often a structural problem with your interviewing process, and not something you can reliably dismiss as an issue with that specific interviewer.
