The only thing that I can think of is that most Western cultures deal with "standing in line" as a part of the culture. "Cutting in line" is understood as not a good character trait and will get you either yelled at or considered an inconsiderate bacon-fed whatever of a knave.
Some cultures in more high density population centers NOT in the Western culture have NO idea what "standing in line" means and it is a cultural tradition to work your way through the crowd of passerby to get in front of the seller so you can get YOUR stuff (meal, shopping, dry cleaning, whatever). They don't "see" a line - they see a lot of passerby who are standing around but are still obstacles to be gotten around to get to the seller/cashier or whatever they are trying to get.
They are not being bacon fed whatevers - they are following their cultural expectation - but all the Westerners standing in line are going to be cussing out the ignorant foreigners who don't even notice that they are cutting in line because they don't USE lines back home.
And those Westerners going to that location as tourists are going to be sadly tossed about as they try to find a line to stand in while the locals are trying to get by the weirdoes who are standing in place instead of getting to where they are going so that they can relieve the congestion on the walkway or road....I've never been there, but I understand that "traffic laws" are also regarded differently in the same locations. Not that there aren't Western SSs who ignore laws if they think it will get them where they want to be ninety seconds faster....
They are SS because they should know the local laws, customs, and cultural expectation - so they are ignoring them. The foreigners may be working from a different set of expectations, customs, and possibly legal traditions - so expecting them to know, bone deep, what they are doing is a bit like wearing blinders to make it easier to ignore the differences that do make a difference. The cultural chains that bind invisibly but shape our behavior without our even thinking about it - or in some cases - being able to think about it unless you KNOW that there are fields of study on those very differences (anthropology, sociology, psychology, and many of the so called "soft sciences").
Note - my training is in sociology and I've been told since childhood that I don't think like everyone else. I still don't know if this is good or bad...but it is different and some people do think that different = bad. Or at least different = not good. And not good = bad....so I've been yelled at a few times & had to be told why I was getting yelled at.
Still don't understand why it is not good to dislike football....but I grew up in West Texas and it could be compared to heresy in the Middle Ages - it may not be against church doctrine - but it is NOT encouraged!