Currently, the comment for which I've received the most positive karma by a factor of four is a joke about institutionalized ass-rape. A secondhand joke, effectively a quote with no source cited. Furthermore, the comment had, at best, tangential relevance to the subject of discussion. If anyone were to provide a detailed explanation of why they voted as they did, I predict that I would be appreciative.
Based on this evidence, which priors need to be adjusted? Discuss.
This reminds me of that my highest rated so far answer at Stack Overflow was a big bullet pointed list.
I think the format itself (a list, where each item is at least a whole sentence) has a connotation of thoroughness and authority; and it reduces the TL;DR effect by presenting the content in small-but-not-trivial separable pieces.
Also, I see a “wall of text” as not having bullet points: being a series of long paragraphs without much structure visible without reading the text itself. The term is being misapplied to this comment in my opinion.
I agree that a bullet point list isn't generally considered a wall of text.