"You know perfectly well that when you made a distinction between "great literature" and "mass-market thrillers or children's fiction", you were standing up for something."
At the Guardian:
I am so glad that first-rate children's literature was there for my own children. I would not have wanted them – at 11, 12 or 13 – to confront the complexity and banality of evil. It's quite right that they wanted to read about worlds where evil was uniformly evil and good people were constantly good. In contrast, adulthood means learning that SS officers or drone pilots do go home and kiss their wives, without a thought of belonging to the "dark side".
Wow. If this essayist truly thinks—as opposed to deliberately writing clickbait, which is certainly possible—that children's and YA fiction depicts the world in black-and-white, then he can't be particularly well-versed in either category.