It's not about Wii-fit, Wii-fit is good at what it does : regular exercise training, it's about BMI.
Like it or not she's right, Nintendo shouldn't have used it at all because BMI is just a surrogate and more socially acceptable way to mesure weight, and can be misleading to a lot of impressionable preteen. They are many other ways to track someone's progression without resorting to body mass measurments.








