Each of my children started hating school once the teachers started talking about the importance of having a 'growth mindset'. Some teachers prefer to moralize rather than teach, and the growth mindset unfortunately gives them the perfect outlet for that.
Yes, it is also consistent with the "there is no difference in innate ability between students" that is popular in certain circles (CA Math Framework, looking at you). This allows schools to pretend that they don't need to provide advanced learning for students who are able to move more quickly through material.
I feel that teachers learning about how their interactions contribute to how young students think and feel about themselves and the subject is important. The teachers directly talking about 'growth mindset' to students seems to work against it. It makes me think of corporate speak. For example 'synergy' is worth thinking about (make sure we're working together effectively and similar), but the when we start talking about finding synergies or improving our synergy, eyes start rolling.
