I have experiences with the same type of behavior in India, and a lot of it has got to do with the highly competitive and crowded environment here. If you want access to government services/get served by staff/get onto a bus etc. you will need to be prepared to jostle your way through and be louder than everyone else. 'Personal Space' isn't really a concept that is prevalent here.

This manifests itself in some annoying behaviors like jumping queues, or rushing out of your seats as soon as a plane lands, but also gives rise to some great features - people are rarely wary of strangers, and seem to be more likely to share things or help out one another. Either way, this hardly seems like a deal breaker in deciding what places to visit. There are a lot of factors - natural beauty, history, culture, food, economic development, etc. that are arguably a lot more important.