I'm happy if anyone in my class is reading but personally I don't like them. There's not enough imaginative language or vocabulary in them to make them enjoyable to read aloud; they are terrifically clunky in terms of sentence construction and flow ( leaving aside content.)
That said, my reluctant readers will read them because everyone else is, and parents buy them because they are in Tesco. So, I am glad to find, is Philip Pullman.
Any reading is good - as far as it goes. My problem comes with prising more able readers away from this style. It's easy, predictable, questions on AR are easy. I find decent graphic novels much more apt for my reluctants in class. Neil Gaiman has several novels graphicised. Once they are weaned off the ease of Walliams they often fly right past him. Potter too. Children enjoy complexity and depth. We underestimate them.