"Modern academics are not celebrated for the clarity and felicity of their writing. One of the most important lessons a postgraduate student can learn—and if he doesn’t learn it soon, he’s doomed—is that academics generally do not write books and articles for the purpose of expressing their ideas as clearly as possible for the benefit of people who don’t already understand and agree with them. Academics don’t write to be read; they write to be published. Typically, the only people who actually read academic books and articles are other academics, who only read them to know what they need to reference in their own books and articles. And that’s not reading; that’s trawling."
Barton Swaim, who is definitely not a bad writer, explains, in The Weekly Standard.