A question for the great old ones around here.

I heard a few time that Dragonlance, and in general Weiss/Hickman work was pretty revolutionary at the time, like that it brought D&D out of the dungeon. But I am not really old enough to know the state of the RPG scene at the time, and don’t really know D&D (play it like once a decade).

So I am curious whether it was Revolutionary for RPG in general like PBTA nowadays, or whether it was more bringing some modern (for the time) concepts into D&D