well personally i would have to disagree with his method of teaching. i'm not gonna go into details, but maybe its just that different teachers teach differently.

there is alot more to teach than just that.
(i'm not sayin that its wrong, i actually do teach chromatic scales in the very first few lessons with a beginner student, but with a different purpose behind it; basics to practice with a metronome, left hand finger independance, right hand picking coordination).