I think that the arguments on both sides of this are valid. For me, if I have a problem, it's Bumrungrad. So far, that's included two broken feet (one current; I'm on crutches), one broken arm and one pretty bad case of food poisoning which resulted in being inpatient for three days. For the first two broken bones, When I got home and went to my orthopedic surgeon, he said that Bumrungrad did exactly what they were supposed to, and did it well. (I'm going home next week to see what the story is with the current broken foot.) I do find that they grossly over medicate, however.
That said, if I need surgery, I'm going home. Same for any very serious illness like cancer. The care may be excellent here; but I know that for that type of problem, I'll feel more comfortable at home.