Good for Liam Heneghan.
When interviewed I also said that I was sure that Liam wasn't teaching these sorts of books because they were simplistic. Rather, he's teaching them because unlike self-censored “adult” literature, they contain all kinds of ecological awareness. That kind of awareness translates into sentimental kitsch in most “adult” eyes.
Yet in an ecological age, when there is no one proper scale from which to examine or judge things, all art falls into the uncanny valley of kitsch...as I'm arguing in Dark Ecology.