Why are undergraduates that got an offer at MBB so prideful?

I’ll preface this by saying that I only know west coast MBB people but most of them I know flex so hard that they’re working for MBB. They put their company sticker on everything and make sure their company branded mug is clearly visible. Obviously someone should be proud they got a good job, but I don’t seem to notice this attitude of generally having their nose up in the air towards other with bankers, hedge fund analysts, or others in finance.

They also always talk about how great the exit opps are or how they’re basically set for an MBA at some high tiered business school, but not a lot about the actually work they do or why they like it.

Again, this might be a geographic thing because I have heard of stories of NY bankers from undergrad who also kind of act like this but generally the bankers and traders I meet are there because they’re interested in their job or want to learn skills to get to PE and do some cool deals, but usually not about how prestigious their job op opportunities are.