I blame the so called 'whitelist' of approved nations providing qualified seamen. It is still possible to buy a CoC in many of these people, and I know of people who have experienced this first hand in their home countries.
I sailed earlier this year with 2 European Deck Officers, and was quite frankly shocked by the practices. At one point I arrived on the Bridge to take the watch, to find the ship a couple of cables off the Horsburgh Lighthouse in Singapore heading towards the extremity of the TSS, with no positions since departure, and the guy I was relieving on the internet... Needless to say I wouldn't take the con until things had been done to my liking...
Ash