There were just as many Greeks that converted to Islam as Albanians, Bosniaks and others during the Ottoman period but
they were all expelled and deemed as ''Turks'' despite they were ethnically Greek, as result Armenian and other Christians were imported, the ancestors of Anaximander.

https://en.wikipedia.org/wiki/Greek_Muslims

https://en.wikipedia.org/wiki/Cretan_Turks


There were also many Serbs but they cleansed out their Muslims and brag how they never converted. You see this all over the internet.
Thanks to their Orthodox church restored and being in use or else they would of all converted even in larger scale than Albanians who many still are Christians.