That's a strong reaction.
Why? What's wrong with the source?
There's a lot of good stuff about it, good resource to run a campaign. Well written in a number of admirable ways..... if you have never played the first two games and/or don't really care about continuity or lore.
Anyone remember Phaere, the priestess of Lolth who was antagonist in the drow city of Ust Natha in BG II? Or her brother, the archwizard Malavon-who revolted against his house and led a heretical coup that overthrew the church of Lolth in the city of Rilauven? The latter is (metaphorically) crashing on his sister's couch in Ust Natha. Confirmed heretic and rebel that cost his house control of an entire city. Just chillin in a Lolthite city.
That's the sort of 'small details' it gets wrong. How it treats major characters is somehow even worse. Like Valygar using magic to prolong his youth and longevity, basically in stark contrast to his characterization from the game. Or how Bodhi and Irenicus are both still alive and in Ravenloft, but still pulling strings on Toril.
It also attempted to be LGBTQ inclusive, but had some pretty piss-poor execution in that regard, IMO. For example IIRC Xan was retconned into being a Blessed of Corellon all along who constantly changes gender according to their 'mercurial' whims. So it managed to turn gender identity into a 'wacky gimmick' while also being kinda sexist. That's the sort of bar it sets. Intentions might have been good there with greater representation, but that only goes so far with me personally when the execution is so poor and the characters are so mishandled that it wraps around to pissing me off.
