It's the other side of the teacher retention crisis, the legacy from years of devaluation and disempowering of the role of teacher has finally worked its way through to recent graduate cohorts. Young people aren't stupid, they don't want to spend their entire careers being treated the way they, their parents and their Society treated their teachers. A sure indictment of allegedly progressive, child-centred education reforms. I'm sure that there must be other interpretations which don't get much voce. Please feel free to add yours.