Who is being precipitous?
Episcopalian Chris Johnson posts on ECUSA's response to the sundering of ecumenical ties with ECUSA by "just about every Orthodox church in the world."
Liberals (religious and political) occasionally complain about the fact that Americans have an almost subconscious superiority complex when it comes to the place of the USA in the world. While I understand the point and to some degree agree, I wouldn't term it a superiority complex, let alone an arrogance.
Either way, liberals are just as guilty, as the aftermath of Bp. Robinson's election & consecration demonstrates: pretty much the rest of the Christian world gives ECUSA a big thumbs down, but that's their problem... we are, after all, enlightened American Christians who know best when it comes to these things. Didn't you know that?