>>33470172
first of all
>collage
second, that sounds like the average college classroom.
Especially in the first semester or early on in the semesters when you're stuck in a classroom full of strangers and still making sense of everything including what the class is even going to be.

I don't know what sort of uh "urban setting" that OP's redditor's friend used to teach at where they were used to walking in to a class with paper airplanes flying everywhere with kids dancing on top of desks with a giant 1980s boom box blasting in the back, punk kids rolling dice with the greasers in one corner of the classroom or whatever nonsense he thinks college used to be like

>>33470471
>She used to be really humble before social media.
For you argument's sake I hope you and your sister are both in your mid 40s and actually got experience your youth in the 90s before social media

otherwise your argument is "my sister became a snob when she turned into a teenager" which is par for the course in any generation regardless of social dynamics and technology