Strongly disagree. That page is a list of works that contain conflicts between parties that count as evil by the site's fairly shallow standards, and that's it; it makes no individual claims about authorial motivations. Though if the first few works on the example list that I recognize are anything to go by, comedy, parody, and schadenfreude are more likely as motivations than a cheap play at worldliness.

I doubt you'll find a trope that gives you exactly what you're looking for. Darkness Induced Audience Apathy might be the closest one I can think of, although Eliezer may have been shooting for something more along the lines of True Art Is Angsty; personally, I wouldn't trust either one. TV Tropes isn't especially good at thematic analysis, especially as it touches on "serious" literature.