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Because you won't
For this particular case, I agree with Mystickskye. Although the content in question is technically following the policy, it has nearly no value. The main focus isn't even the Professor J character; it's more about a consistency mistake in the story. Yes, there's nothing about what kind of content does not belong on the wiki. That's because that sort of thing is, admittedly, fairly subjective. At this time, the judgments are being made at the discretion of the moderators who encounter the content in question. As such, I'm going to remove that trivia.
EDIT: The other trivia on that page is questionably relevant... I'm going to leave it for now, but it's kinda bugging me.