One thing that needs keeping in mind, is that there are no "born Christians." No one is born Orthodox - we're born "children of wrath" according to St.Paul, nature of itself perishing. No one is born with faith, no one is born a member of Christ; even if the begining of that journey occurs shortly after birth at the Baptismal font in a good, observant Orthodox family, that little soul is still not "born Orthodox."
Everyone must convert - whether that be discovering the Orthodox Church in one's adult life, or the beginings of making a personal, conscious committment to the religion of one's family and people (which, sadly, does not always occur as soon as this precious soul reaches the age of reason; there are many stories of people only taking a sincere interest in their salvation much later in life, despite having been baptized as infants and nominally raised in the Orthodox Church.)
Looked at that way, the only real distinction I see between converts (who, if it is not for marriage reasons, convert out of conviction) and serious "raised" Orthodox Christians, is that there is still a newness and freshness about the Orthodox Church with the former person than the latter.
If the lives of the neo-confessors against the heresies of Sergianism and Ecumenism have taught us anything (being themselves, with a few exceptions, "born and raised Orthodox" so to speak), it's more a question of seriousness and zeal, than a question of "kooky converts." The same people who find many new converts to be odd, are the same ones who feel uneasy around the likes of a Fr.Ephraim or the zealot monks of Mt.Athos.
In 33 A.D., there were no "born Christians" - and for centuries to follow, due to the Church's growth, the majority of believers would also be "adult converts"... and saints, and martyrs, and confessors. Let's keep things in perspective.