I think the Baldurs Gate name/brand carries a ton of weight still. Lots of people are nostalgic for it because it was a formative game of the 90s.
I think bg3 is also a lot easier to get into than dos 1 and 2. Having actual cut scenes and voice acting for everything goes a long way in making the game immersive. I also feel its easier to get into the combat (though that may just be me having got used to dos beforehand)
I’m really looking forward to playing it (I’ve promised myself to fully beat TotK before I pick it up). I played a ton of BG 1 and 2 when I was a kid and even for me they are hard to pick back up now. A slightly more accessible version of that sounds amazing.
I tried playing bg 1 and 2 about 10 years ago. I put about 40 hours in between them and enjoyed it, but I found it tough going. I’ve found bg3 way easier to get into and have already far surpassed the hours I put into the original games. On top of what I’ve already mentioned, the change to fully turn based is a huge improvement on that weird pausable real time used in the previous games