This is a nonsense statement premised upon the confusion between traditional Chinese Ch’an Buddhism and the very different modern Japanese Zen, and the ignorant conflation of the hua tou technique with the gongan method.
The venerable Xu Yun (who lived to 120 years old) was in attendance of this meeting when these monks arrived and made their case. He listened quietly to these monks and then hit his palm on the table in an angry manner. He stated that a Buddhist monk and his robe cannot be separated, and that in China, a Buddhist robe signifies the practice of both strict celibacy and vegetarianism – without the Vinaya Discipline – Chinese Buddhism simply would not make sense.
‘These facts demonstrate that master Dahui did not refer to his own enlightening method as either a ‘hua tou’, or indeed a ‘kan hua’, and did not view what he was doing as some thing ‘new’ and ‘original’. In fact, the impression one gets from Dahui is that he is following an older tradition that has been forgotten by those around him.’