I don't know about it feeling like a Baldur's Gate game as I never played the older titles, but as someone who only has passing knowledge of the Forgotten Realms setting due to a tabletop campaign taking place way up in the north at Waterdeep, BG3's portrayal of it isn't really any distinguishable from any other generic fantasy setting. It feels like a lot of very epic things haphazardly stapled together without any real identity, until you reach the Underdark.
The Underdark route being so heavily featured and tested does make me curious as to how the other two routes will even compare.
