WERE THE OPENING CEREMONIES TOO JONGOISTIC?
I really don't think so. At least it wasn't any more jingoistic than other countries would have done under similar circumstances, and I somehow doubt they'd be subject to the same lecturing from the European elites about how "unwelcoming" they are.
What about the '80 Olympic team wearing their USA sweaters? I don't think that's such a big deal either, since they'd wouldn't be immediately recognizable without them.