Books must also be blamed for making folks (voters in particular) unreliable. I mean, they make readers immune to pep talk and electoral tricks.
See, true readers come to know values and costs of words. And they tend to use their own brains rather than swallow things already digested by others.
Why paper books? Well, all kinds of e-books are too easy to "edit", or, to be more precise, censor.
Of course, paper books can be and are being censored, but maiming them is kinda more difficult than distorting e-versions. Besides, you`d have to destroy paper editions already published...