This is a particularly egregious example of what I perceive to be a systemic problem with university schools of education. So much time is spent on priorities such as these that graduates have time for little else. In my experience the biggest deficit most recent education graduates have is not a lack of cultural sensitivity (this generation of young teachers is extraordinarily respectful of cultural and ethnic differences), but rather that they simply don't know very much. One of the questions I routinely ask during interviews is about recently read books. The answers are frequently depressing.
If the role of the teacher is to inform ignorance in her students, the first priority of her training should be to remedy her own ignorance. Sadly, this is something that most education departments at most colleges and universities, are currently unwilling or unable to address.