Isn’t the problem with this strategy that every wiki page has an “owner” who gets “notified” every time there is a change to a page? Presumably that owner *can* read Japanese and if they disagree with your comments they’ll be edited right out, regardless of how many others can or can’t read Japanese.
Yes, but one can monitor any changes and put something right back up, plus, when it comes to specific YouTubes that PROVE the assertion about Obama with no room for error, I doubt, in the case of Japanese Wikipedia, they will challenge it or take it down.