Was the MD aircraft in question not equipped for a fully blind landing in zero visibility or does Phuket airport not have the necessary equipment installed?
Surely in a similar situation at say Gatwick Airport there would be no problem with landing in near non existent visibility.
I'm not saying that it can't be done but bare in mind the localizer is offset by one or two degrees if I'm not mistaken, and the downslope on 27 prohibits, at least my operator, from even attempting an autoland even if it wasn't an offset approach.