Damn that's some Grade-A cynicism, I think its probably more that they know that a big reason to play their game is the combat so they include plenty of it, and also know that they're giving enough information for the encounters to be run otherwise if that's what the party wants. Abomination Vaults in particular has an extensive Gazeteer on the nearby town and NPCs players and GMs can interact with, having read a good portion of the first book, it doesn't discourage you from engaging in those elements.
FWIW, the original complaint (from FrozenNorth I believe) was that the adventure offers too little story or reason to be there (for the characters, not the players - the players are presumably motivated sufficiently by the opportunity to move their pawn on a battle board, decimating monsters and powering up...?). The town with its people were noted but only because they "don’t care enough" to clean out the dungeon themselves.
Just saying that what you call an "extensive gazetteer" is exactly what I'm talking about: what D&Ders perceive as "lots of story and personality" is, in actual fact, very meager pickings indeed. (Just because you bother to actually give the store keeper a name, and one secret that might or might not come up during the "investigation" of the dungeon - sorry gotta go

because what I mean here is "randomly stumble upon the single story point related to this NPC's "story" - does not mean there are any elements to "engage" with... at least, not if you want more out of "engagement" than effectively clicking the exclamation mark above the NPC's head.)
When compared to other D&Dy material this product might well look nice and rich, I'll give it that. However,
that sort of proves my point, and I suggest to Frozen he look elsewhere for the kind of storytelling he appears to be in search of, such as, I don't know, you should let Frozen explain, but maybe moral choices, decision points with no obviously best option, situations that challenge your ability to roleplay a character (rather than challenges the character's ability to roll well on a d20 check...)
