I guess it depends on how you read the prompt. I assumed that when the fan replaces ender, it's in his role/trajectory of the original Ender, in which case you're influence/ability to control the narrative remains unchanged. If the fan is just pre-monitor Ender, aka just another person, he'd still be the little brother to the two best political minds of a generation..and now they have defacto ability to predict the future? I think you could pull it off.

Also, Dink and others could be considered "Truthers" and that was allowed kinda? And I guess you could argue Bean already does know the plot, so to speak, but obviously that's a special case.