Well said, Westy. Like I said before the threadcleaning, how the man flies, and how he teaches will determine his success as a CFI. Good English skills are essential to a teacher. Beyond that, students won't care where he's from or how different his name is.
Finally, religion has no place in flight training, and he must be prepared to deal with that, along with the odd intolerant clod, in a graceful manner.