Earlier quoted context omitted.
Indeed; the reason people exonerate it is that the Tories have been threatening the population with a dismantling and privatisation of the NHS for over a decade now, and that's not what anyone wants. People want the NHS to work, to be funded and managed appropriately. A primary reason it doesn't is the Tories crippling it.
What makes you so sure government bureaucracy is even capable of doing this? It never had a great track record to begin with.
Basically, libertarians are just wrong on this. Government-run health care works great and we have many decades of evidence showing that.