system
Given the following post, respond as if you're commenting on Reddit:
human
[Logan] Who was writing/making those X-Men comics?

When they were in the hotel room, Logan got annoyed about Laura having/reading X-Men comics and believing them to be accurate. Who was writing and publishing them? And why did they start? The general public was never particularly fond of mutants, which would limit their audience to mostly mutants who are mostly nonexistent by the time the movie takes place.
gpt
Well, it is perhaps worth mentioning that Marvel Comics actually exists in the (mainstream, at least) Marvel Universe. You know how Watson just wrote down all Sherlock Holmes' adventures and Doyle was just the literary agent? It's sort of like that. 

And while mutants aren't appreciated by establishment authorities, they have what you might describe as "counterculture appeal." Kids eat that stuff up.