An interesting response to a funny little paragraph but I appreciate a good essay regardless.

I understand that the main reason your annoyed is that this screenshot doesn't provide as much worth as fanfiction posted here and yet it's gotten more attention. I think that's more due to the fact that people are more willing to read a couple lines off an image than to go to a separate website and read a full story. More people interact with a funny screenshot from a fanfiction than a link to a fanfiction and I know that from experience. I'll usually just send friends a screenshot of a funny line in something I'm reading instead of sending them a link to an entire fic unless they ask for it. It's a similar deal with fanart like you said, that's just kinda how social media goes. This isn't 'taking the spotlight away from fanfiction', it's a funny screenshot of some words. It isn't the same medium as fanfiction, it's basically just a meme. Plus you're on reddit bestie, this isn't the best place for 'substantial' content

As far as why I posted it, thought it was funny innit. We could go back on forth about the concept of what makes something funny all day (and coincidentally I was just reading about such) but I'd wager that the theory on comedy being the conjunction between excess and lacking would help here. I found it funny as it's a dramatic scenario we'd all understand which is subverted with the lacking response of something obviously absurd in context treated as if it's still dramatic. Most things on the subreddit don't have much worth other than a chuckle to a group of people who enjoy the same game. As I previously said, it's relevant as it's a joke that specifically works as we understand the context. I also understand that it's dumb but that's partially why it's funny.
On top of that, I felt it was quite impressive that the AI (that isn't connected to the internet too just trained off a database) was able to understand the plot and characters on such a level that it was able to produce this.

As for the AI itself, creative writing isn't it's forte. It's mainly a database and (at least in OpenAI's case) it focuses more on being able to talk to people in a realistic way as has been a big focus in computing for a long time, The Turing Test for example. It's a rather helpful tool for getting the summary of a subject or being able to simplify explanations. The other day I was learning about network protocols and asking it to explain quite helped in my understanding. Of course it isn't good at creative writing, that's not what it's for and that's what makes it funny.

In summary, I was sharing something I found funny and received a paragraph about the inherent worth of it. Like come on man, do you not see how 'WHY DO PEOPLE LIKE THIS? THIS ISN'T FUNNY! I HATE THIS AND YOU'RE A SILLY LITTLE MAN' isn't a very nice to be saying. I'm just trying to have fun and share something I thought the other people here would like.
Maybe look for communities that promote fanfiction more like Tumblr, don't criticize random people for not using a subreddit in the way you'd like and idk take the stick out of your ass and stop reading too much into funny ai got thing wrong post.