The title 'Creator Killer', I feel, is misleading.
Currently, it's the title for describing when a work flops so horribly it ruins a creator's career, sometimes for good. It's that flop that they can't recover from.
However, a lot of people might believe it means a Rage Against the Author sort of situation where the creator might LITERALLY be killed by their own work. Such as a story where characters travel to a world where they're only fictional and confront their creator.
Or, some people might think it refers to a work where the creator dies in the process of making the work. For example, the effort done in writing, directing, or performing in the work causes them to suffer a stroke or a heart attack or something like that.
On The True Tropes, it was renamed to Creator-Derailing Project (similar to Star-Derailing Role, where actors' careers are derailed after a certain movie or show). But with The True Tropes being merged with Tropedia due to Fandom decreeing "There can be only one", I'm afraid any work in renaming the trope will be undone.
Personally, I feel the term 'Creator Killer' is WAY too misleading to stand as the title of the trope. In the past, similar renaming has been done. 'Going Down With the Ship' now refers to situations where a captain goes down with a literal sinking ship, but back in the 2000s, it was referring to 'shipping'. Too many people thought it meant the former rather than the latter, so the 'shipping' trope was renamed 'Dying Declaration of Love' and 'Going Down With the Ship' now refers to actual sinking ships and those who stay aboard when the ship sinks. And I feel that was the correct call.
So with that in mind, I think 'Creator Killer' should be renamed. Creator-Derailing Project is just one of several alternate titles that could be used.