This. Earlier games didn't have these kind of scenes because the technology to create them did not exist.
I can’t find definite ratings for original Baldur’s Gate1&2 but they do seem to sit comfortably in T rating even compared to its cRPG contemporaries, like Fallout. I think it is you misremembering how tame those games were. Profanities had hardly place in those game, not to mention explicit sex scenes.
Edit. Whatever, anyway. It’s Baldur’s Gate game in name only, and visual, tonal and narrative issues that (as of this early build) this game has goes far beyond awkward romance cutscenes.
