Absolutely true. Mid-level managers do not want to be bothered by incessant whining from interviewers that were discarded during the interview process. Usually, the person will say "Hello, my name is Bob, and I'm the ......". You visit with him for 20 minutes, and you never see him again. I've been shocked many times to find that the boss I have, when I'm hired, is actually the person who identified himself as a lower-level team member. This is done to evade the endless emails.
Very, very true. I had the unfortunate situtation of being at a social setting and ran into an ex-employee that was fired for cause. He still sends an email nearly every day asking about his status to job postings he has applied for. I try my best not to be rude as he is friends with another close friend of mine, but it is getting old. Our HR is very good about keeping distances between managers and candidates but this guy is well beyond any normal boundaries.