I knew many people who fit that description, but with even a little social intelligence it seemed to me their experiences in highschool were pretty great; they weren’t nerds, they were just smart and studious and many were very well liked. Our homecoming king was on the academic decathalon team. Im not saying that smart, introverted folks with underdeveloped social skills don’t exist, just that they don’t exist opposite to bros and jocks and cool kids (and weren’t mercilessly bullied for being themselves).
On the other end, nerd-culture had permeated all levels of the social strata, and my very popular friends who partied every weekend were also semi-pro halo players and avid anime fans and didn’t hide either of those facts.
It’s only six years, but it could have been wide exposure to the internet? Also very possible I’m seeing the past through rose colored glasses.