Dedication sort of makes sense for its disgusting details; folk magic isn't pretty and something like 'eat that dude's jizz off the sheets' is pretty much on point for what some hoodoo woman would suggest. It's not a very good story but I can see where the inspiration may've come from, and with most 'magic' coming from kids cartoons or asian/indian influences, good ol' conjure woman magic still probably seems exotic.
And with
Rose Madder, it's also not a very good story. But again I can kind of see where some thought may've gone into it, or at least specifically with how the male characters are set up. For all its faults - the abrupt interjection of the supernatural that comes to completely dominate the plot, some really thin supporting characters that're just pulled from central casting, etc - I don't think it would've been a better book if it had male characters added just to flesh out the cast and provide a pre-hashtag #notallmen figleaf.
But while a lot of people rightfully zero in on all of the weird pre-teen sex in
It, what really bothered me about it years later was the ripped-from-the-headlines nature of the gay guy getting murdered.
Almost step-for-step used in the book. I know it's not the first or the last horror book to just grab an actual crime and use it for shock value, but it's just another grimy twist to the book.