I dunno, the comment about the "ghosts not having a backstory" seems about as relevant as "I didn't like the color of the stairs".
Maybe to you, but it's something I enjoyed from the previous game.
There are users here who said the new game does have some little story bits like the original so I'll be happy with that.
It was part of the charm that I loved with the original.
If it was a straight up arcade game I know I wouldn't enjoy it as much so I appreciate any story/puzzle touches added.