I see a lot in this thread people essentially asking, "if there is something wrong with this game, why is it still fun/why are we still playing it?" etc.
That's because despite the problems, BG3 is still a fun game. The poor writing is subjective, the fact remains it is an entertaining fantasy RPG. Despite acusations that I see things through rose tinted glasses, I enjoy many newer rpgs like this. Pillars of Eternity 1&2, DOS 1&2, Pathfinder Wrath of the Righteous are all great, fun games.
Despite that, It's like if I had a party and called a restaurant to order a pizza for my guests but they deliver a lasagna with pizza toppings instead. Then when I complain that they didn't deliver a pizza as requested, they point out that "ahh but your guests were hungry and are still eating the strange lasagna which happens to be delicious isn't it?" They advertised one thing, delivered another, and whether or not it is good is beyond the point.
BG3 is a fun game, in fact if the names and faces were changed they could call it "Divinity Original Sin 3" and I would enjoy it, just as I enjoyed DOS2. We can argue about the quality of the script but that aside, it simply fails to perform as a threequel to the Baldur's Gate series. As such, it is bipolar and trying to be something it is not. I agree with all the comments about how strange it is that Larian takes existing monsters, alters their CR and ignores more appropriate challenges for our party's level. This is a comedy of errors, it does not matter if I am entertained, an error was still made.