I don't accept the premise that you must choose between stylish and informative writing, but the argument fails at the outset. Complaining that Pinker (one assumes especially in his A Sense of Style, which I recommend without reservation) writes poorly for academics by focusing on his writing for a non-academic audience. If you desire a more "academic" style, Pinker is quite capable of providing it, if you look at his journal articles (the abstract to his Formal Models of Abstract Learning at https://www.sciencedirect.com/science/article/abs/pii/001002... should provide sufficient evidence of his familiarity with the norms). One important aspect of a writer's style is how it is directed toward the audience, and Pinker is frequently (and Gladwell is always) not writing for an academic audience. This post also has a fundamental begging-the-question problem: the academic writing it describes is not notable for an absence of style, but for a very specific terse style that is difficult to do well.