It's not strictly true that no other countries have an NHS. The Canadian system is much the same as ours. Germany, where I lived for two years, was though work based insurance but at a low rate (not like the US), and in practice ran much the same as ours. I believe France is similar. The Scandinavian countries again is similar to ours.
Problems have to be called out when they occur, otherwise they don't get put right.
It's interesting to note that Canada has only had around 2,500 deaths, so far.