Baldur’s Gate 3 isn’t the first successful attempt to marry cinematic aspirations with the traditional branching narratives and simulationist world-building of CRPGs. 2009’s Dragon Age: Origins had a very similar mission statement, offering a spiritual successor to BioWare’s earlier Baldur’s Gate titles long before Larian took us back to the titular city (and its surrounding areas).
I don’t get it either, I liked the main plot in DA:O but most of the game is dealing with some big side quests that have next to nothing to do with it.
I don’t remember having many big decisions either, a few characters might die but it doesn’t really matter in the end.