Most Ukrainians are Orthodox Christians. But in July this year, President Volodymyr Zelenskyy signed a bill into law making 25 December the official Christmas holiday as the country adopted the Western, Gregorian calendar.
The world has never needed Ukraine to be transformed into a US/EU/NATO battering ram to be used for the geopolitical menacing of Russia. The world has never needed this nascent brand of Ukrainian nationalism which defines the Ukrainians as the enemy and antithesis of their Russian kinsmen. The world has never needed the shattering of Orthodox Christian unity merely to spite the Russians.
But, if all of that and the total destruction of their country is what a majority of polled Ukrainians wants, then Zelensky is the Russian-speaking, atheist Jew who is willing to make it happen.