There are countries where forming an orderly queue is the norm. There are countries where people never queue. There are countries where people queue for some things but not for others (Here in the UK people queue at bus stops. In the rest of Europe people think that the idea of queuing at bus stops is quite hilarious).

If others are queuing then jumping the queue is rude. But those who live in "queuing societies" shouldn't try to enforce their queuing habits onto those who live in "non-queuing societies" (or vice versa).