First I am in and from NZ so this is an outsiders view.

I think the growth mindset meshes well with the US tenet that everyone can make something of themself if they try hard enough. Your whole system favours adapting a growth mid set approach. After all if it is true being poor or unskilled is personal choice.

I have more trouble with it being quoted here especially the 10,000 hours thing as NZ is a more socialist country which generally accepts that some people will need more help. It also strangely does have a slight class thing too.

I have recently come to think though if I had realised things required effort as a child I may have persisted with some things longer. I wouldn't have become great at them but I may have learnt to do a head stand.