Because you won't
As much as it may be of little value, fun little tidbits such as those are still part of a story. That's why they're in the TRIVIA section rather than the MAIN STORY. You guys are making way too much a fuss over this. If it's canon and mentioned by official sources, it's worth putting under trivia. Believe it or not, people do enjoy such little things and actually do look on wikis for those.
So for the love of everyone's sanity, please just drop this. All of you. As long as it's official, the aforementioned information deserves to be there as much as the main content.
Unfortunately, you do not get to make that call. I also do not believe you speak for the majority opinion.
You're right it on it not being Kitty's call, but I don't believe any of us knows the majority opinion. For that, I'd suggest a survey, on both Mabinogi World Forums and Mabination Forums, to see the results. That is, if such results would be taken into consideration at all. Since, as you said, you removed it because you judged it ill fit to be on the wiki, and that it is currently solely based on moderator judgement. And Mikaya's final sentiment was that it didn't have anywhere to go and that she considers it of little value. Would you like to explore whether people actually consider it valuable? I think it'd be a healthy exercise to see what viewers like and don't like. Maybe you could get some helpful feedback for other things while you're at it.
I'd definitely be interested in the results of such a survey except that I think it'd be best if the results were from regular users of the wiki, even the unregistered ones. I dunno how the heck we'd get those unregistered users to take it though...
We could set a banner on the front page/on the top of the pages, encourage people to make accounts (last I remember the account making process wasn't difficult), and keep such a discussion/survey up for 1~3 weeks. Qualitative results would be preferable to quantitative in my opinion, but both would work. I still think we should cover multiple websites for a higher participant pool, though.