I have no doubt that Wii Music looks and sounds like absolute balls... however, I'm open to the idea that there might be some fun in there somewhere. With unlockable song creation and team play, this could have been the new Daigasso Band Bros. The way it plays notes from a suitable scale and sort of quantisizes them to the tempo/beat is clever in a way, but the MIDI just sounds fucking terrible. I'm SURE the hardware is capable of better samples.
I couldn't even watch sp0rsk's videos, they seemed to be preloading in full before they would play, and I couldn't be bothered waiting. My reading of that thread though is that he made a thread assuring everyone it was good, but to watch his videos it still looks and sounds shit.
Why some of those slathering sackboy distinguished mentally-challenged fellows in that thread are jumping all over people is beyond me though. Fucking pathetic. Sackboy avatars seem to be the new eyepatch avatars. Might as well make a 90x120 GIF that just says "I am a cunt" in most instances.