I like him, but for me, it’s Stephen King, a lot of his stories he goes off on a twenty page non-relevant rant.
Though, the ones where he keeps that to a minimum, are great.
Then there’s Mr. Marketer James Patterson who markets out his name to other authors making it look like he wrote the book when it was obviously someone else.
I’d say most authors that dominate best seller lists could be called highly overrated.
A ton of people only read those sorts of books and so their frame of reference for authorial quality is other books like that and this leads to “bland mass-appeal” being considered “top tier”.