Why do people say Rowling is a good writer

Fuck my friend brings me to this channel full of people who treat the Harry Potter series like they're important modern literature.  And when told that J.K. Rowling is a poor writer, they say shit along the lines of "in comparison to who? Shakespeare!?"

And Jesus, older kids and adults who treat them like they're not children's books.  A friend of mine met a young girl who told her that she "reads mature books, like Harry Potter."

The biggest problem is that she's only a fairly good writer but her books are literally the most popular novels ever, EVER. That's fucking ridiculous. It's the first publishable thing she ever wrote, it's a nice little fantasy, and it outsells actual high-quality literature. Then again, the DaVinci code wasn't that far off. 

I think the lesson that Harry Potter teaches more than anything is that the book industry is a pitiful shithole. It's so minor and unimportant that being attached to a major motion picture and publicity will easily make a two-bit novel more popular than every other work in history.