I know there's a story, I know the entire plot of the game series. (well not the third, obviously) I agree that it does have a fandom, and as long as it's there, there will be more games; I just don't understand why the fandom exists. By all rights, this game shouldn't be as popular as it is. I won't deny it is popular, I guess there's something that sets it apart from other jumpscare games, I just can't find it.
As for the actual scares, I don't think the 'story' contributes enough to the atmosphere to make me shit my pants just from sitting in an office. Be honest, you're not going to get really scared until the jumpscare happens.
(Also, Rebornica?)