I have a hard time believing the Eastern Catholics figure into the issue for Russia - however they do figure into the issue of possession of church property.
Of course the Ukrainian Catholics figure into the Russian Orthodox Church’s thinking. During the time of the Soviet Union, one third of all active parishes in the Soviet Union were located in the Ukrainian Catholic provinces. These Ukrainian Catholic parishes had all been forced at the point of Stalin’s KGB to “join” the officially sanctioned Russian Orthodox Church in 1946. The Ukrainian Catholic bishops were tortured and then murdered by Stalin’s KGB. What makes this liquidation of the largest Eastern Catholic Church more remarkable is that to this day, the Russian Orthodox Church hierarchy never condemned this liquidation nor its role in it. Indeed, they have approved of it. And then they have the gall to claim they can’t meet the Pope because we exist.
Russian neo-imperialism is behind the thinking of much of the current hierarchy in Moscow unfortunately, in my opinion. The territories of much of Western Ukraine were never even under Russia until Stalin annexed them in 1945 yet many in the Russian Orthodox Church comically believe these Ukrainian lands to be their canonical territory - they never were but Kremlin-approved Russian history books teach these were all Russian lands.
As for possession of churches, well there are tens of Orthodox Churches in western Ukraine under Moscow (which were originally Ukrainian Catholic) to this very day. There is no problem with church possession. This is an excuse by Moscow.
There are hundreds of thousands of Ukrainian Catholics in Russia; some exiled there by the Soviets. Guess how many churches they are allowed to build for themselves by Putin or the Russian Orthodox hierarchy.
Personally, the reasoning of “We hate Russians” is a horrific reason for autocephaly. Unchristian foundations for a Church to have.
I think you are entirely misreading the claims for an autocephalous Ukrainian Orthodox Church if you think it is based on horrific hatred for Russians. The feeling of xenophobia is usually displayed by the Russian Orthodox elite to all things Ukrainian - language, history, culture. Hence, the current Patriarch of the Russian Orthodox Church claiming all Ukraine (and even Moldavia!?) belong to Moscow’s Russian world. This is imperialism. It is a political message. Even the German Pope of Rome HH Benedict spoke to Ukrainian pilgrims in the Vatican in Ukrainian and quite well. It is even easier for a Russian to speak some Ukrainian. The Russian Patriarch will not even say one word in Ukrainian when he visits the Ukrainian population though he could, but he won’t.
Ukraine is the second largest Orthodox country in the world and by church attendance it has as many attendees if not more than the Russia which has three times the population. It could long ago have had an autocephalous church it it were not simply for the Moscow’s Church’s imperialism. Not only that but ecumenism may have proceeded quite fruitfully between Ukrainian Catholics and Ukrainian Orthodox without Russia.
Russia under Putin, and Ukraine under pro-Russian Yanukovych are going to hell in a hand basket - severe corruption (from which not even the current Russian Orthodox Patriarch is immune), alcoholism, brutality. And in this atmosphere, the head of the Russian Orthodox Church won’t even deign to meet with the Pope because the Church which Stalin tried to destroy is still growing while P. Kirill’s may be on the fritz.
I know this may not sound well but I believe there are hundreds of thousands of honest Russian Orthodox as well who can’t stand the current hierarchy of the Russian Orthodox Church and its past relationship with the Soviet and now current Kremlin, its “business interests” (i.e. the current Russian Patriarch ran the cigarette and booze trade), and its not confronting society’s problems more forcefully.