Some stays in Turkey do very well. However I’ve seen plenty of cats in need of medical attention (swollen limbs, covered in their own feces, etc) and some people actually harassing them. Same in Greece according to my cousin who was doing some charity work on an island to improve cats conditions.
Stray population needs to be small enough for them to do well with the help they can get from people. The best thing that Turks do for cats, is too neuter them.