I have yet to meet a single such convert who had knowledge of even the most basic Christian doctrines, such as the Incarnation or the Most Holy Trinity, etc. The fact of the matter is that such people did not leave Christianity, they simply discovered Islam. The reason why such a huge amount of British people convert to Islam and other religions is that they are fed up and disillusioned with secular British society. I therefore think the ROCOR's approach (which does not attempt to conform to society) will be the one that will prevail in the long run.