The appeal of politicians on religious matters in Ukraine is against Ukrainian constitution. The Ecumenical Patriarch of Constantinople already stated this a couple of years ago.
I doubt autocephaly will be given to self-proclaimed Orthodox church of Kiev patriarchate. I don’t believe existing Orthodox patriarchates will agree without Moscow patriarchate. Currently , Moscow patriarchate is the basis of Orthodoxy. So powerful is the patriarchate in the world of Orthodoxy.