Why is medschool/nursing such a huge "character trait" in the US?

Hi everybody, title pretty much sums it up but I wanted to elaborate.

I myself am from a central european country and a third year in med-school right now, so I have been exposed to a lot of medicine-themed social media content over the last few years since my algorithm has caught on. Over this time period I have been bombarded primarily with influencers from the US, talking about their experience during school, training etc., but recently I feel like most of the content I see is not only about the topic per se, but the people involved in making the content are basing their whole personality on their career choice, be that nursing or medicine. Obviously in my home country people are happy to talk about their career choice as well and do so quite vocally, but for some reason I get a very different and much more hardcore vibe from most US people I interact with online.

Is this just a skewed social media thing or do you have any experience with this phenomenon? I would greatly appreciate any input, maybe someone even has studied/worked in the field outside and within the US and can share their experiences!

This is observation is based on my very personal social media experience so please take all of this with a grain of salt, I am just genuinely curious.