I can empathise with the emotional state of the parents, as the whole thing must have been a really traumatic experience, but I do not appreciate their holding the NHS to ransom. That the NHS gave in to their demands is a shame, as, incorrectly reported, it makes it look like the NHS were wrong, which destroys faith and trust in it. However, the fact that the NHS did shows that they had the best interests of the child in mind, and that they were no longer prepared to argue over treatment when, at the end of the day, some treatment was better than none.
I imagine that the parents thought they also had the child's best interests in mind, but they were misguided, something that comes all too easily to JWs, who are taught that they have special knowledge and know better than everybody else, those who are controlled by Satan and only out to get them.
I know that the blood issue was raised originally, but I don't think this case had anything to do with that, as, apparently, the father suggested he would allow blood if necessary. However, I do believe other JW psychological factors played a role in their poor decision-making.
I WOULD not, and personally COULD not, have done something similar, as I trust those who know better than I do, and I weigh all of the evidence first, not assume there is some big conspiracy by the NHS to boost or protect egos rather than care for patients. The NHS has its issues, I'll admit, but they are there to their damnedest to protect lives, even of those who maybe don't deserve it (though that is a completely different debate), so this boy's treatment would not have been decided on a whim.