It was poorly stated, but the point of the OP is that Wii Fit didn't actually create its own genre.
That doesn't mean that it isn't a huge advancement of that genre and the biggest release that genre has ever seen.
"The worst part about these reviews is they are [subjective]--and their scores often depend on how drunk you got the media at a Street Fighter event." — Mona Hamilton, Capcom Senior VP of Marketing
*Image indefinitely borrowed from BrainBoxLtd without his consent.