It didn't take long for people to go from wargame to world building. A half century ago. Today, like always, D&D is to a large extent what you make it.And those characters did what? Went into dungeons filled with monsters to collect treasure.
I've always had sessions where there was no combat and sessions where the dice were rolling constantly. I don't see any reason to pigeonhole people into one style of play just because of the origins of the game, their age, or any other external criteria.