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 it doesn't make sense for this timeline to use it, given that it's supposed to be more heavily Ukrainianised
d) Trying to cite how things went in OTL as a justification doesn't really work here, since your map has 1012 AD as the POD, and the article you cited also points out how the term "Kievan Rus" only originated in the 19th century by Russian historiographers (which would explain why the Russian version of the name became standardised for it IOTL)
Kievan Rus' is the preferred academic term for the historical state in the English language. It has been used in the overwhelming supermajority of all historical texts written in English.
Ukrainian historiographers don't write Kyivan Rus', they write in Ukrainian because they're Ukrainian. What did the people who lived at the time call it? Not anything close because they didn't speak English, wouldn't have needed to clarify Rus', and didn't speak Ukrainian or Russian
anyways, but Old East Slavic. Kievan Rus' is not a Russian version of the name, but just the regular English version of the name. If you are concerned about Russian derived spellings of a thousand-year-old state then you should really be watching out for Kiyevan Rus' (from Russian
Киев), which is how it would be transliterated based off today's standards.
Wait until you hear that our transliteration of Ukraine is derived from the same linguistic standardization policies that gave us Kiev. Is
Ukraïna more accurate?
The map exists in our world, so using our most common historical term for the state makes the most sense. If you apply your standards equally every timeline would have to be in the most common language at the time, or in a different version of English. Should we criticize timelines that use the words "Han China" instead of
Hàncháo?
In any case, I think you missed the forest for the trees in your criticism. The map is clearly friendly to Ukraine, not Russia.