Kumble surely actually meant "Aussies didn't play fair". Bill Woodfull had meant the same during the Bodyline series.
Gentleman that Kumble is, he didn't go for point blank accusations, of the "you shouldn't be standing in this room" variety. But direct accusations are a strict no no in Indian culture (as an Indian, you know what I mean).
As for the moral high ground concept: Going by this token, (vocal as they are) Aussies should never complain about any verbal exchange anytime. So no case against Bhajji, all are happy and that's that.
It's good that Australians don't have a victim complex (or at least believe they don't so suffer). Indians will surely learn this gradually as they grow up in the game.