I guess these peculiar traits comes from the evolution of the Chinese people innate struggle in a limited arable land with big population competing with limited resources. So it is an evolution of a first come, first serve and the strongest wins in order to ensure survival. My PRC friends notice that cutting queues, fighting over seats or even cheating is an indication that unless one fights for it, other Chinese will snatch it away.This also explains why the Chinese by nature dislike their own Chinese so much as they are their direct competitors in almost everything the Chinese does. This is a very sad thing affecting an entire people and should not be a matter to joke on.
Instead of poking fun or looking down of the behavior of the Chinese or any communities, it is important to know why they behaves like these and what can society do to mitigate it.