@Dominions SonOnce again, my post got swallowed when I mistakenly hit the wrong button. But ...
As you insist, the -porn suffix has NO relations to pornography, but is the handiest way of signaling a significant story issue. It's used when the story in question has transformed a relatively minor plot detail into the main theme of the story, replacing the protagonist as the lead component of the story moving forward.
It's a common problem, especially among certain 'classes' of authors, most notably among Vets with PTSD, or even reformed gang members with similar recovery issues (where it often takes the form of violence-porn). Writing is a helpful way of dealing with those issues, but they tend to produce the same sorts of stories, which severely limit their exposure.
It's easy enough to spot, and generally, taking the person aside and walking them through the issue, pointing out how it limits their readership, is enough to get them out of the habit/crutch. They can still make their friends comfortable with the story by including it, but they eventually need to move on, relying less upon the crutch and learning to walk again using standard literary techniques.
I've seen amazing things result from relatively simple discussions about those issues, but until it's brought up, most never realize that it's a central limiting factor in their stories. Again, the -porn reference is a handy way of quickly encapsulating the issue (providing you immediately explain why you mean by it).
It's far from porn, but it's so closely related to porn, it's nearly identical. Luckily, it's a relatively easy habit to break, and for those who aren't willing to, it's easy enough to avoid (rather than poking one's own eyes out, which is the immediate alternative!).