Where do you get your information? Most converts in America are non of the Ethnicity of the Church they convert to. I am Irish-American, and I go to a Russian Orthodox Church. Converts to Kolokotronis church are Phillipean.
Even in Russia growth in numbers isn't coming from Ethnic Russians (who are decreasing as a population in Russia) it's coming from the ethnicities immigrating TO Russia.
I refuse to read your entire diatribe when your first premise is complete BS.
Are you daying that most Orthodox in the US do not have an ancestral link to Orthodoxy from the old country? Please. I know many orthodox myself, since my sister-in-law is Greek Orthodox (from Greece), and, as someone perfectly at home among the Melkites, having spent years with them, I know lots of Orthodox through them, as they tend to run in similar circles. Out of this fairly sizable number of people, I personally can come up with a mere handful (including an Orthodox priest named McGillicuddy) who are converts from Catholicism or Protestantism. I don't deny they exist. You, yourself, are an example evidently. Evangelicals, in particular, are converting to Orthodoxy, primarily because of the reflexive aversion to Rome that I alluded to earlier. But the vast majority of the several million Orthodox - of all varieties - in the US are Orthodox by birth and ancestry.
But so what? I'm not arguing so much about recent developments. I'm not even arguing about developments in Russia, which is entirely Orthodox territory anyway. My point was that, historically, the Orthodox have, for various reasons, not been at the forefront of evangelization of non-Christian, hitherto unknown lands. I already gave my reasons for this.