Stephen King ruined the legacy of Salem's Lot by referencing it in other works.
Ever since the late 80s or so Stephen King said he was working on a direct sequel to Salem's Lot, which would have been nice, but instead he screwed it all up by creating some weird meta reference in The Gunslinger books where Salem's Lot is a work of fiction, and then made things even worse by belittling the vampires in the novel Doctor Sleep. He reduced them to inferior versions of the True Knot people who went into Salem's Lot and destroyed all the surviving vampires.
Back in the day it was fun to read a King novel with a cross reference with another novel as he mentioned Salem's Lot in Pet Sematary as a sign for an offramp on a freeway as Rachel drives home near the end of the book, but he took these cross references too far to the point of ruining the original with retconning.
I find it best to forget about anything written by King after 1985 as good, which is also the last time he wrote while drunk and on cocaine.