CE, for most just coming to America was a rebellion against rabbinic authority. Some were already radicals in Russia, which is why they came. In fcat, Trotsky lived in The Bronx for almost three months and wrote articles for the Forverts (now the Forward).
ZD, it’s good that she has some relationship with them. There are those who say that according to Kabbala there is a special inyan to bring back non-Jewish descendants of Jews.
TGI, I heard that it is good for a BT get to where he feels that he is an ordinary Jew, that is someone who is comfortable in the Orthodox community rather than someone who feels like an ignorant stranger.