Yes. Not all engineers take interviewing seriously, and even fewer actually want to be doing it in the moment. It can be seen as a too-frequent interruption that drags down productivity. This creates pressure to put interviewers in rotation who are not ready (so that more senior people can do their actual jobs) and can lead to a bad time when an otherwise-good interviewer betrays his annoyance at having you appear on his calendar. A disturbing proportion of your success as a candidate depends on luck of the draw.
