Trevor isn't really exaggerating. I'm a Singaporean and have worked and travelled around China a lot. These sorts of things are regular occurrences in Chinese airports. Once flights are delayed, the entire mass of pax just lunge forward towards the duty manager, threatening this that and other.
Singaporeans and Hong Kongers can't stand such behaviour from mainland Chinese. Remember they were largely peasants 50 years ago, so it would take some time for the behaviour to evolve, and I think Singaporeans and Hong Kongers behaved like that 50 years ago, after all we are descendants of peasant stock!