You get what you pay for - simple fact.
Anyone who like me has spent considerable time based in 2nd and 3rd world countries knows - having a licence and a rating does not mean equal skills or attitudes. The accident stats demonstrate that quite clearly, as do the grey hairs on my head!
I can think of several airlines who though they were smart by hiring "cheap" foreign crews who then had unfortunate experiences soon after and in some cases reverted to their "expensive" first world pilots. For example you might also ask yourself why CX targets expats for pilot recruitment, when they are part of the PRC and half owned by PRC interests? Or why one large Helo operator I know uses Russian machinery but insist upon western pilots? I have seen the reasons why first hand...
Before the desenters scream; of course there are some good pilots from such places. We have some excellent Eastern European and Asian pilots, even TRE's with my employer. But those of us who know them well also know that many are not and in some cases their culture is perhaps not so well oriented to aviation safety as the wests, and they will often volunteer such opinions themselves.
If you've flown with operators based in these areas you wouldn't need to ask... Political correctness is one thing, reality is another. And when I buy a ticket for my family I want to know the guys up front were chosen on their merits - not price! There is a way to ensure this of course - thorough pre-employment screening. If they make the grade in ALL respects and everything checks out - why not?