I would agree with many that the Wii has let its motion-control system fall into the hands of the "casual uprising".
However, Nintendo did release Metroid Prime 3, which I feel was a very solid game with tight controls and good graphics, even compared to some PS3/Xbox titles. If they (and/or Sony) stuck with similar ideas, utilizing the motion control scheme for quality gaming rather than as a gimmick, these kinds of games wouldn't be so looked down upon. Alas, such thinking is but a fool's dream...