i think it's very widespread in the smaller communities outside of the big cities, and even in some parts of the big cities. the closest association i can think of is the old southern/western towns of the US, particularly with the sentence, "we don't take kindly to the likes of you around here" wrapped around them. it's also not only just saying you're better than someone else, it's also (and i've noticed this a lot) if you speak up about issues or otherwise break a taboo silence. people don't want you to get to where they can't get to, and they don't generally favor change.
i don't think you as a young person can change it, even if you want to. it's your culture, it's the way you were brought up. you risk alienating/getting ostracized from your family, your friends and pretty much any relation you might have with people if you choose to be different.
since it seems very much to be in the mentality of people as well as in the culture, i think most people don't notice it (either consciously or subconsciously). i was raised differently; i reckon that's the reason i've noticed so much of it.
Quote from instain addition to the jante law, non-confrontational-ism is also big in scandinavia
i agree, and i really can't stand this part of the culture.