If I can get a
few hundred people to click on a link like this https://en.wikipedia.org/w/index.php?title=Special:Search&profile=default&fulltext=Search&search=%22James+is+a+nice+guy%22, I can get any message I want on that list. (Curious? Did you click?) The message could be less anonymous and much more obnoxious, obviously
They could vandalize any one of over ten million pages on the English Wikipedia and get the same result. We should be conscious of the dangers but we can easily route around them like we do with other kinds of vandalism.