He doesn't attack the book and HK's work as far as I can see. He attacks some of those who uses TGM as basis for their teaching.
He may be right that there are TGM-based teachers who are too method oriented and where a "One Right Way" thinking gets in the way of improving the student from time to time. But I you will find that in all camps. The criticism is in any case uncalled for.
Don't you hate it when a level head gets in the way of a good ole witch burning?
Good points BerntR.
Kevin
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I could be wrong. I have been before, and will be again.