Russian Orthodox Church Abroad

Are the Greek Old Calendarists Orthodox?

If the Greek Old Calendarists are in the right, why have so many schisms occurred within their movement? Is this not reminiscent of the countless Protestant groups that developed after the Reformers’ departure from the Roman Catholic Church? Would not its numerous schisms indicate that the Church of the Genuine Orthodox Christians of Greece is in the wrong and not part of the Eastern Orthodox Church?

Despite the account of the Apostolic Succession of the Hierarchy of the Church of the Genuine Orthodox Christians of Greece from the Russian Orthodox Church Abroad, are not the Consecrations from the Russian Hierarchs still of questionable nature, since they were done in secret? How can these acts be justified?