BG1/2 are the best RPGs ever made.
Of course they're old. Of course it's not the same beauty as standard modern games. Of course some mechanics are tedious.
But those games are the most legendary cRPG ever created. So yes, launch them and play.
BG3 probably won't have anything to do with them but as a gamer, it's always interresting to discover the best and to try to understand what makes those games so special.
Then you could explain to Larian because I guess they didn't understand
