Not a fan of Bart, but this is an over-reaction. At least for now. Let’s wait and see how the rest of the canonical local churches react to all of the EP’s trespassing.
Such splits in the Orthodox world are nothing new and Moscow is not going to displace Constantinople’s “first among equals” Patriarch. A decree of autocephaly – once issued – cannot be rescinded or just forgotten. The independent Church of Ukraine is here to stay.