Heine versus Nietzsche on obscurantism in philosophy

To what extent is bad writing style, particularly bad academic style, a result of (a) poor skill, (b) affectation, (c) imitation, or (d) a tool to conceal the meaning and implications of one’s ideas? Heinrich Heine here lambasts many of his fellow intellectuals: “Distinguished German philosophers who may accidentally cast a glance over these pages […]