I live and work in Asia and sorry but KAL are the stand-out worst for RT standards and lack of aeronautical professionalism.
Descending from 35000ft at 250kts, changing frequency and immediately transmitting - blocking other aircraft mid-transmission. Repeatedly misunderstanding ATC and thus needing clarification. And until recently, crashing aircraft all over the place.
I have many friends who have worked or still work there and they are decent, level-headed types. To a man they all relate stories of an awful culture of failure, unfair treatment of expats, hypocrisy when it comes to flying skill assessment and overall lack of workplace friendliness.
That you can resign from a job after acceptance by KAL only to be terminated for whatever reason they may see fit is appalling.
The fact that haejangkuk could say "KAL should have no more than 10% expats but now we just have too many". is a perfect illustration of why there are problems at KAL. Haejangkuk might also want to have a discussion with KAL's insurers and ask about the requirements for expats, how this situation arose in the first place and what has been done to remedy the culture within KAL that led to so many fatal accidents.
These points and many others would appear to answer the original question of " "KAL: Why are they ALWAYS advertising for pilots?"