When I talk to my director he seems to actually dislike people who have worked under him for more than 5 years. He likes "fresh blood". If you stay around you are a loser.
He has been there for around 10 years. The fact that he has stayed on for 10 years while mistrusting people who have worked for him for the same time doesn't make sense. But neither does it for managers who have nice offices to promote open office arrangements for their workers. Hypocrites are everywhere.
based on my unpublished anecdata