Forgotten Realms is not a dirty dark medieval world.
Its a high fantasy sexual fetish world with over the top powerfull characters like drizzt around every corner and ridiuclous retcons every 2 years,
Portals to who knows where and a gorillion of weird freakish races living together.
You wouldnt recognize Dark Low fantasy if it plague coughed in your face.
You just say this stuff because of a false purity spiral in the fantasy genre and trying to browbeat larian with some deranged standard of "seriousness".
