The point isn’t really to compare it to the current best that the US governmeny can do. With the US’s historic view on universal/“free at the point of access” health care it is hardly surprising that the VA is a mess. What you should compare it to is the best that other governments have done, in which case there are many examples of excellent universal healthcare from public insurance based all the way through to the UK’s NHS - which does an excellent job despite below inflation budget increases and endless media hyped scandals.