This has been floating around for some time. His observations are mostly good, but I don't happen to agree with his conclusion. Watch the video, and I'll give a few thoughts about it:
His major points seem to be:
1. Learning new things is not and should not be done in time.
Discarding the rhythmic element- as he is basically suggesting- is one way of learning new music. I don't believe it's the only way. I follow the jazz musician's view that rhythm is primary and the notes are secondary- "get the rhythm and the notes will follow" is the philosophy. I've developed some strategies for taking things not quite out of time which I'll be sharing soon. At any rate, in African-influenced musics (e.g. American music) the rhythm is the thing- lose that and you've lost the fundamental idea.
He seems to be arguing against the idea of learning new material with a metronome from the very beginning, which I certainly wouldn't recommend either. I'm sure there are some bad teachers who do that- in fact I kind of get the feeling this is just an infight with some adjunct faculty at MI (or with MI students' teachers back in Iowa).