Gods, my experience with AH has been so surreal as of late. I don't really create a whole lot these days (though I am working on a big collaborative scenario on and off), so I'm mostly content to just lurk and rest on my laurels.
Then, every so often: BAM! Someone comes out of nowhere with a...
Except that:
a) That article you cited points out that "Kyivan Rus" is a viable alternative
b) The use of the name "Kyiv" in Ukrainian dates back way before "a month ago", being named after the legendary founder of the city Kyi
c) The name "Kiev" is derived from Russian and not Ukrainian, so...
"Kievan Rus"
Any particular reason why, despite the region being Ukrainised and speaking Ukrainian, they apparently still use the Russian transliteration for Kyiv?