Wiki vandalised?

Having needed to consult the Wiki, I stumbled upon this friendly message on the main page:

This clearly is a political message of at least questionable phrasing and you might want to have it removed. Since I don't know your stance on this, I did not go ahead and removed it myself. Also, the user seems to have been deleted by GitHub staff, their profile page leads to a 404, which makes the story even more dubious.

Also, I think that there was a similar incident in the past, if I remember correctly and now, @danfickle , you should be able to limit Wiki editing to contributors only: